# List of scheduled monuments in Denbighshire

The county of Denbighshire is in north-east Wales, occupying the Vale of Clwyd and the uplands to the west, east and south. There are 168 scheduled monuments in the county. The oldest is from 225,000 years ago, the oldest inhabited site in Wales. A further three limestone cave systems also have Paleolithic deposits. Three chambered tombs date to the Neolithic. The moorlands in particular are home to many of the 100 Bronze Age and Iron Age, the vast majority of which are burial mounds. There are some 21 hill forts and other enclosure sites, and several stone circles. There are only three sites from the Roman period, and none dating to Early Medieval times. From the Medieval period itself on the other hand, there are 40 sites, including castles, town walls, chapels, crosses, domestic buildings, defensive buildings, bridges and monastic sites. There are 18 post-medieval sites, being a very diverse mix of site types and dates. Most notable is the World Heritage Site at Pontcysyllte Aqueduct. The modern county of Denbighshire bears only slight alignment with the historic county of the same name. The modern county includes parts of historic Merionethshire and Flintshire.
Scheduled monuments have statutory protection. It is illegal to disturb the ground surface or any standing remains. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales. The list of scheduled monuments below is supplied by Cadw with additional material from RCAHMW and Clwyd-Powys Archaeological Trust.

## Scheduled monuments in Denbighshire

| Name | Site type | Community | Location | Details | Historic elisounty | Period | SAM No & Refs |
| Bontnewydd Cave | Cave | Cefnmeiriadog | 53°13′38″N 3°28′35″W﻿ / ﻿53.2271°N 3.4763°W﻿ / 53.2271; -3.4763﻿ (Bontnewydd Cave), SJ015710 | Cave excavated in 1985, which found Neanderthal jaw and teeth remains dated to 225,000 years ago, along with stone tools. These are the oldest hominid remains in Wales. | Denbighshire | 1Prehistoric (palaeolithic) | DE116 |
| Cefn Caves | Cave | Cefnmeiriadog | 53°13′22″N 3°28′07″W﻿ / ﻿53.2227°N 3.4685°W﻿ / 53.2227; -3.4685﻿ (Cefn Cave), SJ020705 | Network of caves first excavated in the 1830s, finding fragments of stone tools along with numerous animal bones over a wide period, probably accumulated in the caves by water action. | Denbighshire | 1.1Prehistoric (palaeolithic and later) | DE115 |
| Cae Gwyn Cave | Cave | Tremeirchion | 53°14′29″N 3°22′20″W﻿ / ﻿53.2414°N 3.3722°W﻿ / 53.2414; -3.3722﻿ (Cae Gwyn Cave), SJ085724 | Cave with worked flint tools. Dated to 16,000BC. | Flintshire | 1.1Prehistoric (palaeolithic) | FL070 |
| Ffynnon Beuno Cave | Cave | Tremeirchion | 53°14′28″N 3°22′19″W﻿ / ﻿53.241°N 3.3719°W﻿ / 53.241; -3.3719﻿ (Ffynnon Beuno Cave), SJ085724 | Limestone cave, where flint tools and animal bones have been found. | Flintshire | 1.1Prehistoric (palaeolithic) | FL069 |
| Branas-Uchaf Round Barrow | Chambered tomb | Llandrillo | 52°55′34″N 3°28′20″W﻿ / ﻿52.926°N 3.4723°W﻿ / 52.926; -3.4723﻿ (Branas-Uchaf Round Barrow), SJ011375 | Chambered tomb with central chamber still in situ, but no capstone. | Merionethshire | 1.1Prehistoric (Neolithic) | ME070 |
| Tyddyn Bleiddyn Burial Chamber | Chambered long cairn | Cefnmeiriadog | 53°14′24″N 3°29′20″W﻿ / ﻿53.2399°N 3.4889°W﻿ / 53.2399; -3.4889﻿ (Tyddyn Bleiddyn Burial Chamber), SJ007724 | Two cairns excavated in the mid-19th century. They found numerous crouched inhumations in two cists, with passageways. | Denbighshire | 1.2Prehistoric (Neolithic) | DE007 |
| Tan-y-Coed Burial Chamber | Chambered long cairn | Llandrillo | 52°56′44″N 3°25′08″W﻿ / ﻿52.9455°N 3.4188°W﻿ / 52.9455; -3.4188﻿ (Tan-y-Coed Burial Chamber), SJ047396 | | Merionethshire | 1.2Prehistoric (Neolithic) | ME048 |
| Round Barrow 135m SE of Lodge Farm | Round barrow | Bodfari | 53°14′15″N 3°20′32″W﻿ / ﻿53.2375°N 3.3423°W﻿ / 53.2375; -3.3423﻿ (Round Barrow 135m SE of Lodge Farm), SJ105720 | | Flintshire | 1.3Prehistoric | FL034 |
| Gribin Oernant Cairn | Round barrow | Bryneglwys | 53°00′44″N 3°13′41″W﻿ / ﻿53.0122°N 3.2281°W﻿ / 53.0122; -3.2281﻿ (Gribin Oernant Cairn), SJ177468 | | Denbighshire | 1.3Prehistoric | DE271 |
| Pant y Maen Round Barrow | Round barrow | Bryneglwys | 53°01′15″N 3°15′21″W﻿ / ﻿53.0207°N 3.2558°W﻿ / 53.0207; -3.2558﻿ (Pant y Maen Round Barrow), SJ158477 | | Denbighshire | 1.3Prehistoric | DE034 |
| Rhos Lydan Round Barrows | Round barrow | Bryneglwys | 53°02′12″N 3°15′07″W﻿ / ﻿53.0367°N 3.2519°W﻿ / 53.0367; -3.2519﻿ (Rhos Lydan Round Barrows), SJ161495 | | Denbighshire | 1.3Prehistoric | DE035 |
| Ty Mawr Round Barrows | Round barrow | Bryneglwys | 53°01′29″N 3°15′11″W﻿ / ﻿53.0248°N 3.2531°W﻿ / 53.0248; -3.2531﻿ (Ty Mawr Round Barrows), SJ160482 | | Denbighshire | 1.3Prehistoric | DE033 |
| Bedd Emlyn | Round barrow | Clocaenog | 53°04′05″N 3°24′56″W﻿ / ﻿53.068°N 3.4155°W﻿ / 53.068; -3.4155﻿ (Bedd Emlyn), SJ052532 | | Denbighshire | 1.3Prehistoric | DE201 |
| Bryn Beddau Round Barrows | Round barrow | Clocaenog | 53°03′53″N 3°25′13″W﻿ / ﻿53.0648°N 3.4203°W﻿ / 53.0648; -3.4203﻿ (Bryn Beddau Round Barrows), SJ049528 | Group of Bronze Age barrows in Clocaenog Forest discovered when forest roads were built in the 1960s. One of the barrows may be a stone circle. The site includes 'Bedd Emlyn' which had an early medieval ogham stone, removed in 1813 and now in the National Museum of Wales. | Denbighshire | 1.3Prehistoric (Bronze Age) | DE040 |
| Bryn Beddau Stone Circle | Stone circle | Clocaenog | 53°03′43″N 3°25′24″W﻿ / ﻿53.0619°N 3.4232°W﻿ / 53.0619; -3.4232﻿ (Bryn Beddau Stone Circle), SJ047525 | Prehistoric stone circle of at least 19 stones, within Clocaenog Forest, in a heather-covered clearing. | Denbighshire | 1.3Prehistoric | DE245 |
| Maen Llwyd Standing Stone | Standing stone | Clocaenog | 53°03′36″N 3°25′19″W﻿ / ﻿53.0601°N 3.4219°W﻿ / 53.0601; -3.4219﻿ (Maen Llwyd Standing Stone), SJ048523 | Massive stone, 3.4m long, now lying down. It is within Clocaenog Forest. | Denbighshire | 1.3Prehistoric | DE255 |
| Plas Perthi Burial Mound | Round barrow | Clocaenog | 53°04′37″N 3°21′00″W﻿ / ﻿53.0769°N 3.3499°W﻿ / 53.0769; -3.3499﻿ (Plas Perthi Burial Mound), SJ096541 | | Denbighshire | 1.3Prehistoric | DE192 |
| Rug Mound | Round barrow | Corwen | 52°59′02″N 3°24′27″W﻿ / ﻿52.9839°N 3.4075°W﻿ / 52.9839; -3.4075﻿ (Rug Mound), SJ056438 | | Merionethshire | 1.3Prehistoric | ME019 |
| Two Cairns North of Plasnewydd | Round cairn | Corwen | 52°57′42″N 3°17′41″W﻿ / ﻿52.9616°N 3.2947°W﻿ / 52.9616; -3.2947﻿ (Two Cairns North of Plasnewydd), SJ131412 | | Denbighshire | 1.3Prehistoric | DE272 |
| Wilderness Round Barrows | Round barrow | Corwen, (also Llangollen), (also Llansantffraid Glyn Ceiriog), (see also Wrexham) | 52°57′14″N 3°13′47″W﻿ / ﻿52.9539°N 3.2298°W﻿ / 52.9539; -3.2298﻿ (Wilderness Round Barrows), SJ174403 | | Denbighshire | 1.3Prehistoric | DE092 |
| Round Barrow 400m SE of Tai Marian | Round barrow | Cwm | 53°17′01″N 3°23′15″W﻿ / ﻿53.2836°N 3.3876°W﻿ / 53.2836; -3.3876﻿ (Round Barrow 400m SE of Tai Marian), SJ075771 | | Flintshire | 1.3Prehistoric | FL041 |
| Three Round Barrows in Cwm Wood | Round barrow | Cwm | 53°16′43″N 3°23′12″W﻿ / ﻿53.2785°N 3.3866°W﻿ / 53.2785; -3.3866﻿ (Three Round Barrows in Cwm Wood), SJ076766 | | Flintshire | 1.3Prehistoric | FL192 |
| Capel Hiraethog Earth Circles | Ring cairn | Cyffylliog | 53°04′48″N 3°26′25″W﻿ / ﻿53.0801°N 3.4402°W﻿ / 53.0801; -3.4402﻿ (Capel Hiraethog Earth Circles), SJ036546 | | Denbighshire | 1.3Prehistoric | DE043 |
| Capel Hiraethog Round Barrow | Round barrow | Cyffylliog | 53°04′44″N 3°26′44″W﻿ / ﻿53.0789°N 3.4455°W﻿ / 53.0789; -3.4455﻿ (Capel Hiraethog Round Barrow), SJ032544 | | Denbighshire | 1.3Prehistoric | DE042 |
| Moel yr Henfaes Cairn Cemetery | Round cairn | Cynwyd | 52°56′34″N 3°23′22″W﻿ / ﻿52.9428°N 3.3894°W﻿ / 52.9428; -3.3894﻿ (Moel yr Henfaes Cairn Cemetery), SJ067392 | | Merionethshire | 1.3Prehistoric | DE301 |
| Moel yr Henfaes Ring Cairn | Ring cairn | Cynwyd | 52°56′16″N 3°22′41″W﻿ / ﻿52.9377°N 3.3781°W﻿ / 52.9377; -3.3781﻿ (Moel yr Henfaes Ring Cairn), SJ074387 | | Merionethshire | 1.3Prehistoric | DE299 |
| Nant Croes-y-wernen Stone Circle | Stone circle | Cynwyd | 52°56′29″N 3°20′37″W﻿ / ﻿52.9414°N 3.3435°W﻿ / 52.9414; -3.3435﻿ (Nant Croes-y-wernen Stone Circle), SJ098390 | | Merionethshire | 1.3Prehistoric | DE300 |
| Garw Fynydd Cairn | Platform Cairn | Derwen | 53°02′52″N 3°24′48″W﻿ / ﻿53.0479°N 3.4134°W﻿ / 53.0479; -3.4134﻿ (Garw Fynydd Cairn), SJ053510 | | Denbighshire | 1.3Prehistoric | DE274 |
| Coed Plas Round Barrow | Round barrow | Henllan | 53°12′24″N 3°26′59″W﻿ / ﻿53.2067°N 3.4498°W﻿ / 53.2067; -3.4498﻿ (Coed Plas Round Barrow), SJ032687 | | Denbighshire | 1.3Prehistoric | DE050 |
| Old Foxhall Round Barrow | Round barrow | Henllan | 53°11′41″N 3°26′53″W﻿ / ﻿53.1948°N 3.4481°W﻿ / 53.1948; -3.4481﻿ (Old Foxhall Round Barrow), SJ033673 | | Denbighshire | 1.3Prehistoric | DE052 |
| Plas Heaton Round Barrow | Round barrow | Henllan | 53°12′20″N 3°26′59″W﻿ / ﻿53.2055°N 3.4496°W﻿ / 53.2055; -3.4496﻿ (Plas Heaton Round Barrow), SJ032685 | | Denbighshire | 1.3Prehistoric | DE049 |
| Plas-Meifod Round Barrow | Round barrow | Henllan | 53°12′07″N 3°27′26″W﻿ / ﻿53.2019°N 3.4573°W﻿ / 53.2019; -3.4573﻿ (Plas-Meifod Round Barrow), SJ027681 | | Denbighshire | 1.3Prehistoric | DE051 |
| Moel y Plas Round Barrow | Round barrow | Llanarmon-yn-Ial | 53°05′23″N 3°14′25″W﻿ / ﻿53.0897°N 3.2404°W﻿ / 53.0897; -3.2404﻿ (Moel y Plas Round Barrow), SJ170554 | | Denbighshire | 1.3Prehistoric | DE062 |
| Tyn-y-Mynydd Round Barrow | Round barrow | Llanarmon-yn-Ial | 53°05′36″N 3°14′37″W﻿ / ﻿53.0934°N 3.2435°W﻿ / 53.0934; -3.2435﻿ (Tyn-y-Mynydd Round Barrow), SJ168558 | | Denbighshire | 1.3Prehistoric | DE061 |
| Moel Eithinen Round Barrow | Round barrow | Llanbedr Dyffryn Clwyd | 53°07′21″N 3°15′34″W﻿ / ﻿53.1224°N 3.2595°W﻿ / 53.1224; -3.2595﻿ (Moel Eithinen Round Barrow), SJ158591 | | Denbighshire | 1.3Prehistoric | DE280 |
| Moel Gyw Round Barrow | Round barrow | Llanbedr Dyffryn Clwyd | 53°06′31″N 3°14′21″W﻿ / ﻿53.1086°N 3.2391°W﻿ / 53.1086; -3.2391﻿ (Moel Gyw Round Barrow), SJ171575 | | Denbighshire | 1.3Prehistoric | DE063 |
| Mynydd Cricor Barrow | Round barrow | Llanbedr Dyffryn Clwyd | 53°02′37″N 3°16′26″W﻿ / ﻿53.0435°N 3.2738°W﻿ / 53.0435; -3.2738﻿ (Mynydd Cricor Barrow), SJ146503 | | Denbighshire | 1.3Prehistoric | DE266 |
| Abersychnant Cairn | Round barrow | Llandegla | 53°02′19″N 3°08′35″W﻿ / ﻿53.0385°N 3.143°W﻿ / 53.0385; -3.143﻿ (Abersychnant Cairn), SJ234496 | | Denbighshire | 1.3Prehistoric | DE264 |
| Cas-Gan-Ditw Round Barrow | Round barrow | Llandegla | 53°03′49″N 3°08′49″W﻿ / ﻿53.0637°N 3.1469°W﻿ / 53.0637; -3.1469﻿ (Cas-Gan-Ditw Round Barrow), SJ232524 | | Denbighshire | 1.3Prehistoric | DE169 |
| Cefn y Cist Cairn | Round barrow | Llandegla | 53°01′47″N 3°08′12″W﻿ / ﻿53.0297°N 3.1366°W﻿ / 53.0297; -3.1366﻿ (Cefn y Cist Cairn), SJ238486 | | Denbighshire | 1.3Prehistoric | DE269 |
| Cefn y Gader Round Barrows | Round barrow | Llandegla, (also Penycae), (also Minera), (see also Wrexham) | 53°02′21″N 3°08′18″W﻿ / ﻿53.0393°N 3.1384°W﻿ / 53.0393; -3.1384﻿ (Cefn y Gader Round Barrows), SJ237497 | | Denbighshire | 1.3Prehistoric | DE070 |
| Craig-y-Forwyn Cairn | Round cairn | Llandegla | 53°01′29″N 3°08′20″W﻿ / ﻿53.0246°N 3.139°W﻿ / 53.0246; -3.139﻿ (Craig-y-Forwyn Cairn), SJ236480 | | Denbighshire | 1.3Prehistoric | DE267 |
| Cryn-y-Brain Round Barrow | Round barrow | Llandegla | 53°01′49″N 3°09′08″W﻿ / ﻿53.0303°N 3.1523°W﻿ / 53.0303; -3.1523﻿ (Cryn-y-Brain Round Barrow), SJ228487 | | Denbighshire | 1.3Prehistoric | DE270 |
| Cyrn y Brain Round Barrows | Round barrow | Llandegla | 53°02′18″N 3°10′29″W﻿ / ﻿53.0384°N 3.1747°W﻿ / 53.0384; -3.1747﻿ (Cyrn y Brain Round Barrows), SJ213496 | | Denbighshire | 1.3Prehistoric | DE065 |
| Llyn Cyfnwy Round Barrow | Round barrow | Llandegla | 53°05′03″N 3°10′28″W﻿ / ﻿53.0842°N 3.1745°W﻿ / 53.0842; -3.1745﻿ (Llyn Cyfnwy Round Barrow), SJ214547 | | Denbighshire | 1.3Prehistoric | DE064 |
| Maes Maelor Round Barrow | Round barrow | Llandegla | 53°03′55″N 3°08′48″W﻿ / ﻿53.0653°N 3.1466°W﻿ / 53.0653; -3.1466﻿ (Maes Maelor Round Barrow), SJ232526 | | Denbighshire | 1.3Prehistoric | DE056 |
| Rhos-Ddigre Caves | Cave | Llandegla | 53°04′25″N 3°12′49″W﻿ / ﻿53.0737°N 3.2135°W﻿ / 53.0737; -3.2135﻿ (Rhos-Ddigre Caves), SJ187536 | Group of 5 caves with Bronze Age burials | Denbighshire | 1.3Prehistoric (Bronze Age) | DE119 |
| Blaen Llynor Round Cairn | Round cairn | Llandrillo | 52°55′13″N 3°21′44″W﻿ / ﻿52.9203°N 3.3622°W﻿ / 52.9203; -3.3622﻿ (Blaen Llynor Round Cairn), SJ085367 | | Merionethshire | 1.3Prehistoric | DE302 |
| Cader Bronwen Round Barrow | Round barrow | Llandrillo | 52°54′05″N 3°22′22″W﻿ / ﻿52.9014°N 3.3729°W﻿ / 52.9014; -3.3729﻿ (Cader Bronwen Round Barrow), SJ077346 | | Denbighshire | 1.3Prehistoric | DE060 |
| Cairns, Settlements & Field Systems of Prehistoric & Medieval date at Pennant above Nant Esgeiriau | Ring cairn | Llandrillo | 52°53′18″N 3°25′03″W﻿ / ﻿52.8884°N 3.4175°W﻿ / 52.8884; -3.4175﻿ (Cairns, Settlements & Field Systems of Prehistoric & Medieval date at Pennant above Nant Esgeiriau), SJ047332 | | Merionethshire | 1.3Prehistoric | ME146 |
| Carnedd y Ci Barrow | Round cairn | Llandrillo | 52°53′40″N 3°24′18″W﻿ / ﻿52.8945°N 3.405°W﻿ / 52.8945; -3.405﻿ (Carnedd y Ci Barrow), SJ055339 | | Denbighshire | 1.3Prehistoric | DE260 |
| Cefn Penagored Cairn and Ring Cairn | Kerb cairn | Llandrillo | 52°53′29″N 3°25′47″W﻿ / ﻿52.8914°N 3.4298°W﻿ / 52.8914; -3.4298﻿ (Cefn Penagored Cairn and Ring Cairn), SJ038336 | | Denbighshire | 1.3Prehistoric | DE257 |
| Cefn Penagored Ridge Cairns | Kerb cairn | Llandrillo | 52°53′28″N 3°25′36″W﻿ / ﻿52.891°N 3.4267°W﻿ / 52.891; -3.4267﻿ (Cefn Penagored Ridge Cairns), SJ041335 | | Denbighshire | 1.3Prehistoric | DE256 |
| Moel Sych Round Barrow | Round barrow | Llandrillo, (also Llanrhaeadr-ym-Mochnant), (see also Powys) | 52°52′34″N 3°23′19″W﻿ / ﻿52.8761°N 3.3887°W﻿ / 52.8761; -3.3887﻿ (Moel Sych Round Barrow), SJ066318 | | Denbighshire | 1.3Prehistoric | DE067 |
| Moel Ty-Uchaf Circles | Stone circle | Llandrillo | 52°55′24″N 3°24′18″W﻿ / ﻿52.9232°N 3.4051°W﻿ / 52.9232; -3.4051﻿ (Moel Ty-Uchaf Circles), SJ056371 | A circle of 43 stones, probably representing the kerbs of a burial mound. A central hollow could be a robbed-out grave. | Merionethshire | 1.3Prehistoric | ME013 |
| Nant Esgeiriau Cairn | Round cairn | Llandrillo | 52°53′08″N 3°25′20″W﻿ / ﻿52.8856°N 3.4221°W﻿ / 52.8856; -3.4221﻿ (Nant Esgeiriau Cairn), SJ044329 | | Denbighshire | 1.3Prehistoric | DE259 |
| Nant Gwyn Round Cairns | Round cairn | Llandrillo | 52°55′24″N 3°22′25″W﻿ / ﻿52.9234°N 3.3737°W﻿ / 52.9234; -3.3737﻿ (Nant Gwyn Round Cairns), SJ077371 | | Merionethshire | 1.3Prehistoric | DE305 |
| Pennant Cairns | Round barrow | Llandrillo | 52°53′20″N 3°25′27″W﻿ / ﻿52.889°N 3.4241°W﻿ / 52.889; -3.4241﻿ (Pennant Cairns), SJ042333 | | Denbighshire | 1.3Prehistoric | DE258 |
| Ring Cairn E of Ffridd Camen | Ring cairn | Llandrillo | 52°53′57″N 3°25′03″W﻿ / ﻿52.8992°N 3.4175°W﻿ / 52.8992; -3.4175﻿ (Ring Cairn E of Ffridd Camen), SJ047344 | | Merionethshire | 1.3Prehistoric | ME147 |
| Two Ring Cairns West of Cwm Tywyll | Ring cairn | Llandrillo | 52°53′38″N 3°25′37″W﻿ / ﻿52.8939°N 3.4269°W﻿ / 52.8939; -3.4269﻿ (Two Ring Cairns West of Cwm Tywyll), SJ041338 | | Merionethshire | 1.3Prehistoric | ME145 |
| Tyfos Stone Circle | Stone circle | Llandrillo | 52°56′15″N 3°26′49″W﻿ / ﻿52.9374°N 3.447°W﻿ / 52.9374; -3.447﻿ (Tyfos Stone Circle), SJ028388 | Thirteen recumbent stones define the kerb of a cairn | Merionethshire | 1.3Prehistoric (Bronze Age) | ME024 |
| Tom Dongen Round Barrow | Round barrow | Llanelidan | 53°01′53″N 3°19′22″W﻿ / ﻿53.0315°N 3.3229°W﻿ / 53.0315; -3.3229﻿ (Tom Dongen Round Barrow), SJ113490 | | Denbighshire | 1.3Prehistoric | DE072 |
| Cefn Coch Tumulus | Round barrow | Llanfair Dyffryn Clwyd | 53°06′08″N 3°17′02″W﻿ / ﻿53.1022°N 3.2839°W﻿ / 53.1022; -3.2839﻿ (Cefn Coch Tumulus), SJ141568 | | Denbighshire | 1.3Prehistoric | DE265 |
| Moel Llech Round Barrow | Round barrow | Llanfair Dyffryn Clwyd | 53°05′37″N 3°14′38″W﻿ / ﻿53.0935°N 3.2438°W﻿ / 53.0935; -3.2438﻿ (Moel Llech Round Barrow), SJ168558 | | Denbighshire | 1.3Prehistoric | DE108 |
| Ffynnon-Las Wood Round Barrow | Round barrow | Llangollen | 52°57′37″N 3°11′56″W﻿ / ﻿52.9603°N 3.1988°W﻿ / 52.9603; -3.1988﻿ (Ffynnon-Las Wood Round Barrow), SJ195409 | | Denbighshire | 1.3Prehistoric | DE091 |
| Circular Platforms North West of Hen Ddinbych | Platform Cairn | Llanrhaeadr-yng-Nghinmeirch | 53°05′48″N 3°30′37″W﻿ / ﻿53.0967°N 3.5102°W﻿ / 53.0967; -3.5102﻿ (Circular Platforms North West of Hen Ddinbych), SH989565 | | Denbighshire | 1.3Prehistoric | DE087 |
| Twr yr Hill Round Barrow | Round barrow | Llanrhaeadr-yng-Nghinmeirch | 53°06′42″N 3°28′44″W﻿ / ﻿53.1117°N 3.479°W﻿ / 53.1117; -3.479﻿ (Twr yr Hill Round Barrow), SJ010581 | | Denbighshire | 1.3Prehistoric | DE088 |
| Craig Arthur Kerb Cairn | Kerb cairn | Llantysilio | 53°00′55″N 3°09′33″W﻿ / ﻿53.0153°N 3.1593°W﻿ / 53.0153; -3.1593﻿ (Craig Arthur Kerb Cairn), SJ223470 | | Denbighshire | 1.3Prehistoric | DE262 |
| Creigiau Eglwyseg Cairn | Round cairn | Llantysilio | 52°59′31″N 3°09′39″W﻿ / ﻿52.992°N 3.1608°W﻿ / 52.992; -3.1608﻿ (Creigiau Eglwyseg Cairn), SJ221444 | | Denbighshire | 1.3Prehistoric | DE261 |
| Creigiau Eglwyseg Round Barrow | Round barrow | Llantysilio | 52°59′56″N 3°08′59″W﻿ / ﻿52.9988°N 3.1496°W﻿ / 52.9988; -3.1496﻿ (Creigiau Eglwyseg Round Barrow), SJ229452 | | Denbighshire | 1.3Prehistoric | DE079 |
| Creigiau Eglwyseg Round Barrows & Earth Circle | Round barrow | Llantysilio | 52°59′46″N 3°09′35″W﻿ / ﻿52.9962°N 3.1598°W﻿ / 52.9962; -3.1598﻿ (Creigiau Eglwyseg Round Barrows & Earth Circle), SJ222449 | | Denbighshire | 1.3Prehistoric | DE081 |
| Creigiau Eglwyseg Stone Circle | Stone circle | Llantysilio | 52°59′52″N 3°09′05″W﻿ / ﻿52.9979°N 3.1515°W﻿ / 52.9979; -3.1515﻿ (Creigiau Eglwyseg Stone Circle), SJ228451 | Possible stone circle, or kerbs of a cairn. | Denbighshire | 1.3Prehistoric | DE080 |
| Eglwyseg Mountain Round Barrow | Round barrow | Llantysilio, (also Penycae), (see also Wrexham) | 53°00′31″N 3°08′49″W﻿ / ﻿53.0086°N 3.147°W﻿ / 53.0086; -3.147﻿ (Eglwyseg Mountain Round Barrow), SJ231463 | | Denbighshire | 1.3Prehistoric | DE066 |
| Eliseg's Pillar | Round barrow with inscribed pillar | Llantysilio | 52°59′32″N 3°11′21″W﻿ / ﻿52.9921°N 3.1893°W﻿ / 52.9921; -3.1893﻿ (Eliseg's Pillar & Tumulus), SJ202445 | Erected by Cyngen ap Cadell (died 855), king of Powys in honour of his great-grandfather Elisedd ap Gwylog. The form Eliseg found on the pillar is thought to be a mistake by the carver of the inscription. The pillar stands on a Bronze Age burial mound. | Denbighshire | 1.3Prehistoric | DE015 |
| Moel Gamelin Round Barrow | Round barrow | Llantysilio | 53°00′35″N 3°13′45″W﻿ / ﻿53.0096°N 3.2291°W﻿ / 53.0096; -3.2291﻿ (Moel Gamelin Round Barrow), SJ176465 | | Denbighshire | 1.3Prehistoric | DE068 |
| Rhewl Round Barrows | Round barrow | Llanynys | 53°07′58″N 3°19′34″W﻿ / ﻿53.1329°N 3.3261°W﻿ / 53.1329; -3.3261﻿ (Rhewl Round Barrows), SJ113603 | | Denbighshire | 1.3Prehistoric | DE167 |
| Bwlch-Du Round Barrow | Round barrow | Nantglyn | 53°06′36″N 3°30′41″W﻿ / ﻿53.11°N 3.5114°W﻿ / 53.11; -3.5114﻿ (Bwlch-Du Round Barrow), SH989580 | | Denbighshire | 1.3Prehistoric | DE085 |
| Gorsedd Bran Round Barrows | Platform Cairn | Nantglyn | 53°07′47″N 3°32′06″W﻿ / ﻿53.1296°N 3.5351°W﻿ / 53.1296; -3.5351﻿ (Gorsedd Bran Round Barrows), SH973602 | | Denbighshire | 1.3Prehistoric | DE168 |
| Round Barrow at Coed Bell, Gronant | Round barrow | Prestatyn | 53°20′06″N 3°22′18″W﻿ / ﻿53.3351°N 3.3718°W﻿ / 53.3351; -3.3718﻿ (Round Barrow at Coed Bell, Gronant), SJ087828 | | Flintshire | 1.3Prehistoric | FL188 |
| Round Barrow West of Ty Draw | Round barrow | Prestatyn | 53°19′08″N 3°23′51″W﻿ / ﻿53.319°N 3.3976°W﻿ / 53.319; -3.3976﻿ (Round Barrow West of Ty Draw), SJ069811 | | Flintshire | 1.3Prehistoric | FL112 |
| Castle Farm Round Barrow | Round barrow | Ruthin | 53°06′45″N 3°18′27″W﻿ / ﻿53.1126°N 3.3075°W﻿ / 53.1126; -3.3075﻿ (Castle Farm Round Barrow), SJ125580 | | Denbighshire | 1.3Prehistoric | DE105 |
| Criafol Round Barrow | Round barrow | Tremeirchion | 53°16′27″N 3°21′41″W﻿ / ﻿53.2742°N 3.3614°W﻿ / 53.2742; -3.3614﻿ (Criafol Round Barrow), SJ093761 | | Flintshire | 1.3Prehistoric | FL170 |
| Round Barrow 270m NW of Traveller's Inn | Round barrow | Tremeirchion | 53°16′22″N 3°20′06″W﻿ / ﻿53.2727°N 3.335°W﻿ / 53.2727; -3.335﻿ (Round Barrow 270m NW of Traveller's Inn), SJ110759 | | Flintshire | 1.3Prehistoric | FL047 |
| Round Barrow 800m NE of Criafol Farm | Round barrow | Tremeirchion | 53°16′47″N 3°20′57″W﻿ / ﻿53.2797°N 3.3492°W﻿ / 53.2797; -3.3492﻿ (Round Barrow 800m NE of Criafol Farm), SJ101767 | | Flintshire | 1.3Prehistoric | FL048 |
| Two Round Barrows on Moel Maen Efa | Round barrow | Tremeirchion | 53°15′30″N 3°22′13″W﻿ / ﻿53.2583°N 3.3703°W﻿ / 53.2583; -3.3703﻿ (Two Round Barrows on Moel Maen Efa), SJ086743 | | Flintshire | 1.3Prehistoric | FL049 |
| Coed Clwyd Cairns | Round barrow | Waen | 53°08′33″N 3°15′27″W﻿ / ﻿53.1424°N 3.2576°W﻿ / 53.1424; -3.2576﻿ (Coed Clwyd Cairns), SJ159613 | | Denbighshire | 1.3Prehistoric | DE248 |
| Dinas Melin-y-Wig | Hillfort | Betws Gwerfil Goch | 53°01′52″N 3°25′09″W﻿ / ﻿53.0312°N 3.4193°W﻿ / 53.0312; -3.4193﻿ (Dinas Melin-y-Wig), SJ049491 | | Merionethshire | 1.5Prehistoric | ME014 |
| Mynydd Rhyd Ddu Enclosure | Hillfort | Betws Gwerfil Goch | 53°01′07″N 3°24′37″W﻿ / ﻿53.0187°N 3.4104°W﻿ / 53.0187; -3.4104﻿ (Mynydd Rhyd Ddu Enclosure), SJ054477 | | Denbighshire | 1.5Prehistoric | DE252 |
| Moel y Gaer | Hillfort | Bodfari | 53°13′35″N 3°21′24″W﻿ / ﻿53.2265°N 3.3568°W﻿ / 53.2265; -3.3568﻿ (Moel y Gaer), SJ095707 | | Flintshire | 1.5Prehistoric | FL073 |
| Moel y Gaer, Cefn | Hillfort | Bryneglwys | 53°00′29″N 3°14′34″W﻿ / ﻿53.0081°N 3.2428°W﻿ / 53.0081; -3.2428﻿ (Moel y Gaer, Cefn), SJ167463 | | Denbighshire | 1.5Prehistoric | DE126 |
| Bedd-y-Cawr Hillfort | Hillfort | Cefnmeiriadog | 53°14′11″N 3°28′48″W﻿ / ﻿53.2364°N 3.4799°W﻿ / 53.2364; -3.4799﻿ (Bedd-y-Cawr Hillfort), SJ013720 | Hillfort on natural inland promontory with ditch and bank and an area of 0.8 hectares (2.0 acres) | Denbighshire | 1.5Prehistoric | DE037 |
| Pont Petryal Caerau Circles | Enclosure | Clocaenog | 53°03′29″N 3°25′44″W﻿ / ﻿53.0581°N 3.429°W﻿ / 53.0581; -3.429﻿ (Pont Petryal Caerau Circles), SJ043521 | | Denbighshire | 1.5Prehistoric | DE041 |
| Bwrdd y Tri Arglwydd Boundary Stone | Boundary stone | Corwen | 53°00′40″N 3°20′11″W﻿ / ﻿53.011°N 3.3364°W﻿ / 53.011; -3.3364﻿ (Bwrdd y Tri Arglwydd Boundary Stone), SJ104468 | Possible remnant of a cromlech, or a medieval boundary stones. It is at the junction of four parishes. | Merionethshire | 1.5Prehistoric | ME025 |
| Caer Drewen Camp | Hillfort | Corwen | 52°59′21″N 3°21′36″W﻿ / ﻿52.9892°N 3.3601°W﻿ / 52.9892; -3.3601﻿ (Caer Drewen Camp), SJ087444 | | Merionethshire | 1.5Prehistoric | ME012 |
| Moel Fodig Camp | Hillfort | Corwen | 53°00′03″N 3°20′54″W﻿ / ﻿53.0007°N 3.3482°W﻿ / 53.0007; -3.3482﻿ (Moel Fodig Camp), SJ096456 | | Merionethshire | 1.5Prehistoric | ME051 |
| Y Garth Camp | Enclosure | Cyffylliog | 53°07′03″N 3°22′30″W﻿ / ﻿53.1174°N 3.3751°W﻿ / 53.1174; -3.3751﻿ (Y Garth Camp), SJ080586 | | Denbighshire | 1.5Prehistoric | DE103 |
| Gwerclas Mound | Mound | Cynwyd | 52°58′06″N 3°24′36″W﻿ / ﻿52.9682°N 3.4101°W﻿ / 52.9682; -3.4101﻿ (Gwerclas Mound), SJ053421 | | Merionethshire | 1.5Prehistoric | ME069 |
| Y Gaerwen Enclosure, Llangar | Enclosure | Cynwyd | 52°57′17″N 3°26′59″W﻿ / ﻿52.9547°N 3.4498°W﻿ / 52.9547; -3.4498﻿ (Y Gaerwen Enclosure, Llangar), SJ027406 | | Merionethshire | 1.5Prehistoric | ME091 |
| Moel Hiraddug Hillfort | Hillfort | Dyserth | 53°17′37″N 3°24′21″W﻿ / ﻿53.2937°N 3.4057°W﻿ / 53.2937; -3.4057﻿ (Moel Hiraddug Hillfort), SJ064783 | | Flintshire | 1.5Prehistoric | FL012 |
| Craig Adwywynt Camp | Hillfort | Efenechtyd | 53°04′45″N 3°18′46″W﻿ / ﻿53.0793°N 3.3129°W﻿ / 53.0793; -3.3129﻿ (Craig Adwywynt Camp), SJ121543 | | Denbighshire | 1.5Prehistoric | DE073 |
| Pen-y-Gaer Camp | Hillfort | Efenechtyd | 53°05′00″N 3°20′11″W﻿ / ﻿53.0832°N 3.3364°W﻿ / 53.0832; -3.3364﻿ (Pen-y-Gaer Camp), SJ105548 | | Denbighshire | 1.5Prehistoric | DE045 |
| Moel Fenlli Camp | Hillfort | Llanbedr Dyffryn Clwyd | 53°07′53″N 3°15′08″W﻿ / ﻿53.1314°N 3.2523°W﻿ / 53.1314; -3.2523﻿ (Moel Fenlli Camp), SJ163600 | | Denbighshire | 1.5Prehistoric | DE009 |
| Moel-y-Gaer Camp | Hillfort | Llanbedr Dyffryn Clwyd | 53°08′46″N 3°16′27″W﻿ / ﻿53.146°N 3.2742°W﻿ / 53.146; -3.2742﻿ (Moel-y-Gaer Camp), SJ148617 | An oval Iron Age hillfort overlooking the Vale of Clwyd. | Denbighshire | 1.5Prehistoric | DE010 |
| Craig yr Uchain | Enclosure | Llandrillo | 52°55′04″N 3°27′08″W﻿ / ﻿52.9179°N 3.4523°W﻿ / 52.9179; -3.4523﻿ (Craig yr Uchain), SJ024366 | | Denbighshire | 1.5Prehistoric | DE230 |
| Platform Settlement by Clochnant E of Cadwst | Unenclosed hut circle | Llandrillo | 52°54′21″N 3°25′07″W﻿ / ﻿52.9058°N 3.4186°W﻿ / 52.9058; -3.4186﻿ (Platform Settlement by Clochnant E of Cadwst), SJ046352 | | Merionethshire | 1.5Prehistoric | ME148 |
| Moel Arthur Camp | Hillfort | Llandyrnog, (also Nannerch), (see also Flintshire) | 53°11′05″N 3°16′50″W﻿ / ﻿53.1846°N 3.2806°W﻿ / 53.1846; -3.2806﻿ (Moel Arthur Camp), SJ145660 | | Flintshire | 1.5Prehistoric | FL010 |
| Pen-y-Cloddiau Camp | Hillfort | Llandyrnog, (also Ysceifiog), (see also Flintshire) | 53°11′55″N 3°18′19″W﻿ / ﻿53.1986°N 3.3054°W﻿ / 53.1986; -3.3054﻿ (Pen-y-Cloddiau Camp), SJ128676 | | Flintshire | 1.5Prehistoric | FL009 |
| Prestatyn Roman Site | Settlement | Prestatyn | 53°19′31″N 3°24′37″W﻿ / ﻿53.3253°N 3.4104°W﻿ / 53.3253; -3.4104﻿ (Prestatyn Roman Site), SJ061818 | | Flintshire | 1.5Roman | FL094 |
| Blaen-y-Cwm Inscribed Stone (Now in Llandrillo Church) | Inscribed stone | Llandrillo | 52°55′20″N 3°26′16″W﻿ / ﻿52.9223°N 3.4379°W﻿ / 52.9223; -3.4379﻿ (Blaen-y-Cwm Inscribed Stone (Now in Llandrillo Church)), SJ034370 | | Merionethshire | 2Roman | ME066 |
| Plas-newydd Romano-British temple cropmark | Temple | Llanfair Dyffryn Clwyd | 53°05′31″N 3°17′24″W﻿ / ﻿53.0919°N 3.2901°W﻿ / 53.0919; -3.2901﻿ (Plas-newydd Romano-British temple cropmark), SJ137557 | | Denbighshire | 2Roman | DE289 |
| Ffynnon Fair (Well), Cefn | Holy Well | Cefnmeiriadog | 53°13′40″N 3°27′21″W﻿ / ﻿53.2278°N 3.4557°W﻿ / 53.2278; -3.4557﻿ (Ffynnon Fair (Well), Cefn), SJ029710 | | Denbighshire | 4Medieval | DE038 |
| Corwen Churchyard Cross | Cross | Corwen | 52°58′48″N 3°22′25″W﻿ / ﻿52.98°N 3.3736°W﻿ / 52.98; -3.3736﻿ (Corwen Churchyard Cross), SJ079433 | | Merionethshire | 4Medieval | ME052 |
| Owain Glyndwr's Mount | Motte | Corwen | 52°58′41″N 3°18′17″W﻿ / ﻿52.9781°N 3.3046°W﻿ / 52.9781; -3.3046﻿ (Owain Glyndwr's Mount), SJ125431 | | Merionethshire | 4Medieval | ME017 |
| Coed Llynor Long Hut | Deserted Rural Settlement | Cynwyd | 52°55′27″N 3°23′06″W﻿ / ﻿52.9242°N 3.3851°W﻿ / 52.9242; -3.3851﻿ (Coed Llynor Long Hut), SJ069372 | | Merionethshire | 4Medieval | DE304 |
| Llangar Old Parish Church | Church | Cynwyd | 52°58′16″N 3°23′45″W﻿ / ﻿52.9712°N 3.3959°W﻿ / 52.9712; -3.3959﻿ (Llangar Old Parish Church & Churchyard), SJ063424 | | Merionethshire | 4Medieval | ME093 |
| Coed Clattwn Moated Site | Moated Site | Denbigh | 53°12′27″N 3°25′52″W﻿ / ﻿53.2076°N 3.431°W﻿ / 53.2076; -3.431﻿ (Coed Clattwn Moated Site), SJ045687 | | Denbighshire | 4Medieval | DE234 |
| Denbigh Castle and Medieval Town | Castle | Denbigh | 53°10′50″N 3°25′14″W﻿ / ﻿53.1806°N 3.4206°W﻿ / 53.1806; -3.4206﻿ (Denbigh Castle and Medieval Town), SJ051657 | | Denbighshire | 4Medieval | DE156 |
| Denbigh Friary | Friary | Denbigh | 53°11′16″N 3°24′33″W﻿ / ﻿53.1878°N 3.4091°W﻿ / 53.1878; -3.4091﻿ (Denbigh Friary), SJ059665 | | Denbighshire | 4Medieval | DE023 |
| Denbigh Medieval Town (North - Eastern Corner) | Town | Denbigh | 53°10′54″N 3°25′09″W﻿ / ﻿53.1816°N 3.4191°W﻿ / 53.1816; -3.4191﻿ (Denbigh Medieval Town (North - Eastern Corner)), SJ052658 | | Denbighshire | 4Medieval | DE225 |
| Denbigh Town Walls | Town defences | Denbigh | 53°10′51″N 3°25′09″W﻿ / ﻿53.1808°N 3.4191°W﻿ / 53.1808; -3.4191﻿ (Denbigh Town Wall), SJ052657 | | Denbighshire | 4Medieval | DE002 |
| Llys Gwenllian Mound & Bailey | Motte & Bailey | Denbigh | 53°10′06″N 3°24′47″W﻿ / ﻿53.1682°N 3.4131°W﻿ / 53.1682; -3.4131﻿ (Llys Gwenllian Mound & Bailey), SJ056643 | | Denbighshire | 4Medieval | DE019 |
| Denbigh, St Hilary's Chapel | Tower | Denbigh | 53°10′54″N 3°25′11″W﻿ / ﻿53.1818°N 3.4198°W﻿ / 53.1818; -3.4198﻿ (St Hilary's Chapel Tower), SJ052659 | | Denbighshire | 4Medieval | DE005 |
| Derwen Churchyard Cross | Cross | Derwen | 53°02′45″N 3°23′18″W﻿ / ﻿53.0457°N 3.3882°W﻿ / 53.0457; -3.3882﻿ (Churchyard Cross, Derwen), SJ070507 | | Denbighshire | 4Medieval | DE162 |
| Dyserth Castle | Castle | Dyserth | 53°18′28″N 3°24′40″W﻿ / ﻿53.3079°N 3.4111°W﻿ / 53.3079; -3.4111﻿ (Dyserth Castle), SJ060799 | | Flintshire | 4Medieval | FL130 |
| Siamber-Wen Medieval House | House (domestic) | Dyserth | 53°18′21″N 3°24′36″W﻿ / ﻿53.3057°N 3.4101°W﻿ / 53.3057; -3.4101﻿ (Siamber-Wen Medieval House), SJ061796 | | Flintshire | 4Medieval | FL063 |
| Old Foxhall Earth Circle | Enclosure | Henllan | 53°11′42″N 3°26′47″W﻿ / ﻿53.195°N 3.4465°W﻿ / 53.195; -3.4465﻿ (Old Foxhall Earth Circle), SJ034674 | | Denbighshire | 4Medieval | DE053 |
| Pysgodlan Moated Site | Moated Site | Henllan | 53°12′44″N 3°26′22″W﻿ / ﻿53.2122°N 3.4394°W﻿ / 53.2122; -3.4394﻿ (Pysgodlan Moated Site), SJ039693 | | Denbighshire | 4Medieval | DE200 |
| Tomen y Faerdre Castle Mound | Motte | Llanarmon-yn-Ial | 53°05′47″N 3°12′22″W﻿ / ﻿53.0964°N 3.2062°W﻿ / 53.0964; -3.2062﻿ (Tomen y Faerdre Castle Mound), SJ193561 | | Denbighshire | 4Medieval | DE006 |
| Churchyard Cross, St Meugan's Church | Cross | Llanbedr Dyffryn Clwyd | 53°06′36″N 3°17′10″W﻿ / ﻿53.11°N 3.2861°W﻿ / 53.11; -3.2861﻿ (Churchyard Cross, St Meugan's Church), SJ140577 | | Denbighshire | 4Medieval | DE188 |
| Tomen y Rhodwydd (Castell yr Adwy) Mound and Bailey Castle | Motte & Bailey | Llandegla | 53°03′19″N 3°13′46″W﻿ / ﻿53.0553°N 3.2294°W﻿ / 53.0553; -3.2294﻿ (Tomen y Rhodwydd (Castell yr Adwy) Mound and Bailey Castle), SJ176516 | | Denbighshire | 4Medieval | DE018 |
| Cwm Tywyll House Platforms | House platform | Llandrillo | 52°53′40″N 3°25′09″W﻿ / ﻿52.8944°N 3.4192°W﻿ / 52.8944; -3.4192﻿ (Cwm Tywyll House Platforms), SJ046339 | | Denbighshire | 4Medieval | DE249 |
| Ffridd Camen Hafodydd | Platform house | Llandrillo | 52°54′01″N 3°25′21″W﻿ / ﻿52.9003°N 3.4225°W﻿ / 52.9003; -3.4225﻿ (Ffridd Camen Hafodydd), SJ044345 | | Denbighshire | 4Medieval | DE250 |
| Ffridd Camen Long Hut | Rectangular hut | Llandrillo | 52°54′07″N 3°25′17″W﻿ / ﻿52.9019°N 3.4213°W﻿ / 52.9019; -3.4213﻿ (Ffridd Camen Long Hut), SJ044347 | | Denbighshire | 4Medieval | DE251 |
| Ffridd yr Eglwys Deserted Rural Settlement | Rectangular hut | Llandrillo | 52°53′24″N 3°26′10″W﻿ / ﻿52.8899°N 3.4361°W﻿ / 52.8899; -3.4361﻿ (Ffridd yr Eglwys Deserted Rural Settlement), SJ034334 | | Denbighshire | 4Medieval | DE254 |
| Gwern Wynodl Hafod | Platform house | Llandrillo | 52°54′29″N 3°25′20″W﻿ / ﻿52.908°N 3.4223°W﻿ / 52.908; -3.4223﻿ (Gwern Wynodl Hafod), SJ044354 | | Denbighshire | 4Medieval | DE247 |
| Nant Gwyn Long Hut | Deserted Rural Settlement | Llandrillo | 52°55′34″N 3°23′14″W﻿ / ﻿52.9261°N 3.3872°W﻿ / 52.9261; -3.3872﻿ (Nant Gwyn Long Hut), SJ068374 | | Merionethshire | 4Medieval | DE306 |
| Coed Henblas Moated Site | Moated Site | Llanfair Dyffryn Clwyd | 53°05′13″N 3°16′29″W﻿ / ﻿53.087°N 3.2748°W﻿ / 53.087; -3.2748﻿ (Coed Henblas Moated Site), SJ147551 | | Denbighshire | 4Medieval | DE232 |
| Castell Dinas Bran | Castle | Llangollen | 52°58′44″N 3°09′30″W﻿ / ﻿52.979°N 3.1584°W﻿ / 52.979; -3.1584﻿ (Castell Dinas Bran), SJ223430 | | Denbighshire | 4Medieval | DE021 |
| Llangollen Bridge | Bridge | Llangollen | 52°58′16″N 3°10′13″W﻿ / ﻿52.971°N 3.1702°W﻿ / 52.971; -3.1702﻿ (Llangollen Bridge), SJ215421 | | Denbighshire | 4Medieval | DE026 |
| Hen Ddinbych Circular Platforms | Enclosure | Llanrhaeadr-yng-Nghinmeirch | 53°05′42″N 3°30′33″W﻿ / ﻿53.0949°N 3.5093°W﻿ / 53.0949; -3.5093﻿ (Hen Ddinbych Circular Platforms), SH990563 | | Denbighshire | 4Medieval | DE086 |
| Valle Crucis Abbey | Abbey | Llantysilio | 52°59′20″N 3°11′12″W﻿ / ﻿52.9888°N 3.1867°W﻿ / 52.9888; -3.1867﻿ (Valle Crucis Abbey), SJ204441 | | Denbighshire | 4Medieval | DE003 |
| Prestatyn Castle | Castle | Prestatyn | 53°20′18″N 3°23′39″W﻿ / ﻿53.3383°N 3.3943°W﻿ / 53.3383; -3.3943﻿ (Prestatyn Castle), SJ072833 | An earth mound south of Prestatyn railway station. | Flintshire | 4Medieval | FL024 |
| Criccin Cross | Cross shaft | Rhuddlan | 53°16′57″N 3°26′23″W﻿ / ﻿53.2826°N 3.4396°W﻿ / 53.2826; -3.4396﻿ (Criccin Cross), SJ041771 | | Flintshire | 4Medieval | FL102 |
| Part of site of Rhuddlan Norman Borough | Town | Rhuddlan | 53°17′18″N 3°27′42″W﻿ / ﻿53.2882°N 3.4617°W﻿ / 53.2882; -3.4617﻿ (Part of Site of Norman Borough), SJ026778 | | Flintshire | 4Medieval | FL129 |
| Rhuddlan Bridge | Bridge | Rhuddlan | 53°17′24″N 3°28′08″W﻿ / ﻿53.2899°N 3.4689°W﻿ / 53.2899; -3.4689﻿ (Rhuddlan Bridge), SJ021779 | | Flintshire | 4Medieval | FL018 |
| Rhuddlan Castle | Castle | Rhuddlan | 53°17′21″N 3°27′54″W﻿ / ﻿53.2891°N 3.465°W﻿ / 53.2891; -3.465﻿ (Rhuddlan Castle), SJ024779 | | Flintshire | 4Medieval | FL004 |
| Rhuddlan Town Banks | Town defences | Rhuddlan | 53°17′33″N 3°28′05″W﻿ / ﻿53.2925°N 3.468°W﻿ / 53.2925; -3.468﻿ (Rhuddlan Town Banks), SJ022782 | | Flintshire | 4Medieval | FL068 |
| Twthill, Rhuddlan | Motte & Bailey | Rhuddlan | 53°17′14″N 3°27′43″W﻿ / ﻿53.2871°N 3.4619°W﻿ / 53.2871; -3.4619﻿ (Twthill (Further and Additional Areas)), SJ026776 | | Flintshire | 4Medieval | FL015 |
| Ffynogion Moated Site | Moated Site | Ruthin | 53°05′45″N 3°18′12″W﻿ / ﻿53.0958°N 3.3032°W﻿ / 53.0958; -3.3032﻿ (Ffynogion Moated Site), SJ128561 | | Denbighshire | 4Medieval | DE074 |
| Ruthin Castle | Castle | Ruthin | 53°06′45″N 3°18′42″W﻿ / ﻿53.1124°N 3.3116°W﻿ / 53.1124; -3.3116﻿ (Ruthin Castle), SJ123580 | | Denbighshire | 4Medieval | DE022 |
| Deeside Slateworks | Water Power System | Corwen | 52°58′07″N 3°16′08″W﻿ / ﻿52.9686°N 3.269°W﻿ / 52.9686; -3.269﻿ (Deeside Slateworks), SJ148420 | | Denbighshire | 5Post-Medieval/Modern | DE246 |
| Pont Carrog | Bridge | Corwen | 52°59′01″N 3°19′09″W﻿ / ﻿52.9835°N 3.3192°W﻿ / 52.9835; -3.3192﻿ (Pont Carrog), SJ115437 | | Merionethshire | 5Post-Medieval/Modern | ME029 |
| Rhug ornamental wrought iron gates | Gate | Corwen | 52°58′57″N 3°24′35″W﻿ / ﻿52.9824°N 3.4097°W﻿ / 52.9824; -3.4097﻿ (Rhug ornamental wrought iron gates), SJ054437 | | Merionethshire | 5Post-Medieval/Modern | ME047 |
| Rug Chapel | Chapel | Corwen | 52°59′03″N 3°23′39″W﻿ / ﻿52.9842°N 3.3942°W﻿ / 52.9842; -3.3942﻿ (Rug Chapel), SJ064438 | | Merionethshire | 5Post-Medieval/Modern | ME089 |
| Pont Dyfrdwy | Bridge | Cynwyd | 52°57′37″N 3°24′41″W﻿ / ﻿52.9602°N 3.4114°W﻿ / 52.9602; -3.4114﻿ (Pont Dyfrdwy), SJ052412 | | Merionethshire | 5Post-Medieval/Modern | ME033 |
| Civil War Earthworks | Siegeworks | Denbigh | 53°10′55″N 3°25′00″W﻿ / ﻿53.182°N 3.4168°W﻿ / 53.182; -3.4168﻿ (Civil War Earthworks), SJ054659 | | Denbighshire | 5Post-Medieval/Modern | DE028 |
| Leicester's Church, Denbigh | Church | Denbigh | 53°10′56″N 3°25′08″W﻿ / ﻿53.1822°N 3.419°W﻿ / 53.1822; -3.419﻿ (Leicester's Church), SJ053659 | The only large-scale church building project in Elizabethan England or Wales. Built, but left unfinished, by Robert Dudley, 1st Earl of Leicester, it now stands as a ruin in the centre of Denbigh. | Denbighshire | 5Post-Medieval/Modern | DE044 |
| Clive Engine House, Meliden | Engine house | Dyserth | 53°18′31″N 3°25′04″W﻿ / ﻿53.3085°N 3.4179°W﻿ / 53.3085; -3.4179﻿ (Clive Engine House, Meliden), SJ056799 | Built in 1862, to house a pump for the Talargoch lead mine. | Flintshire | 5Post-Medieval/Modern | FL136 |
| New Foxhall Dovecot | Dovecote | Henllan | 53°11′44″N 3°27′11″W﻿ / ﻿53.1955°N 3.4531°W﻿ / 53.1955; -3.4531﻿ (New Foxhall Dovecot), SJ030674 | | Denbighshire | 5Post-Medieval/Modern | DE055 |
| New Foxhall House | House (domestic) | Henllan | 53°11′45″N 3°27′13″W﻿ / ﻿53.1958°N 3.4537°W﻿ / 53.1958; -3.4537﻿ (New Foxhall House), SJ029675 | | Denbighshire | 5Post-Medieval/Modern | DE054 |
| Pont Cilan | Bridge | Llandrillo | 52°55′32″N 3°27′27″W﻿ / ﻿52.9256°N 3.4575°W﻿ / 52.9256; -3.4575﻿ (Pont Cilan), SJ021374 | | Merionethshire | 5Post-Medieval/Modern | ME032 |
| Pontcysyllte Aqueduct and Canal | Aqueduct | Llangollen, (also Llangollen Rural), (also Chirk), (see also Wrexham) | 52°58′13″N 3°05′16″W﻿ / ﻿52.9702°N 3.0878°W﻿ / 52.9702; -3.0878﻿ (Pontcysyllte Aqueduct and Canal), SJ270419 | Built in 1805, by Thomas Telford, this is the longest and highest aqueduct in Britain. It carries the Llangollen Canal over the River Dee. | Denbighshire | 5Post-Medieval/Modern | DE175 |
| Maen Huail | Stone | Ruthin | 53°06′52″N 3°18′39″W﻿ / ﻿53.1144°N 3.3108°W﻿ / 53.1144; -3.3108﻿ (Maen Huail Historic Stone), SJ123582 | A square stone block in the centre of Ruthin, "On which tradition states, King Arthur beheaded Huail, brother of Gildas the historian". The stone is against the half-timbered wall of Exmewe Hall, on St. Peter's Square, facing the roundabout. | Denbighshire | 5Unknown | DE030 |
| Ruthin Churchyard Ornamental Wrought Iron Gates & Screen | Gate | Ruthin | 53°06′54″N 3°18′39″W﻿ / ﻿53.1151°N 3.3108°W﻿ / 53.1151; -3.3108﻿ (Ruthin Churchyard Ornamental Wrought Iron Gates & Screen), SJ124583 | | Denbighshire | 5Post-Medieval/Modern | DE159 |
| Pont Dafydd (old) | Bridge | St Asaph | 53°15′49″N 3°26′06″W﻿ / ﻿53.2636°N 3.4349°W﻿ / 53.2636; -3.4349﻿ (Pont Dafydd (old)), SJ043750 | | Flintshire | 5Post-Medieval/Modern | FL027 |
| St Asaph Bridge | Bridge | St Asaph | 53°15′23″N 3°26′51″W﻿ / ﻿53.2564°N 3.4476°W﻿ / 53.2564; -3.4476﻿ (St Asaph Bridge), SJ035742 | | Flintshire | 5Post-Medieval/Modern | FL026 |
| Pennant Mines Winding Engine House & Chimney, Rhuallt | Engine house | Tremeirchion | 53°16′02″N 3°22′10″W﻿ / ﻿53.2673°N 3.3694°W﻿ / 53.2673; -3.3694﻿ (Pennant Mines Winding Engine House & Chimney, Rhuallt), SJ087753 | | Flintshire | 5Post-Medieval/Modern | FL137 |
| First World War Practice Trenches at Bodelwyddan Park | Practice trenches | Bodelwyddan | 53°15′28″N 3°30′00″W﻿ / ﻿53.2577°N 3.4999°W﻿ / 53.2577; -3.4999﻿ (First World War Practice Trenches at Bodelwyddan Park), SJ000744 | | Flintshire | 5.9Post-Medieval/Modern | FL186 |
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