# List of Roman-to-modern scheduled monuments in Powys (Brecknockshire)

Powys is the largest administrative county in Wales. With over a quarter of Wales's land area, covering much of the eastern half of the country, it is a county of remote uplands, low population and no coastline. It was created in more or less its current form in 1974, and is the only one of the large county units created at that time to have been carried forward intact at the 1996 local government re-organisation. It comprises three historic counties, namely Montgomeryshire, Radnorshire, and most of Brecknockshire. There are 950 scheduled monuments within the county, which is far more than can be sensibly covered in one list. Each of the 3 historic counties is therefore listed separately, and each of these has two lists - one for the prehistoric sites and one for the Roman, medieval and post-medieval sites.
This list shows the sites in Brecknockshire dating to Roman, medieval, post-medieval through to modern times. The area is also historically known as Breconshire, (not including those parts that are no longer in Powys). Brecknockshire is the southern third of Powys, and encompasses parts of the Brecon Beacons National Park, much of the Black Mountains and all of Mynydd Epynt. The River Wye separates it from Radnorshire. There are 135 scheduled monuments on this list. Of these, 10 are Roman, all of which are military in purpose, being either roads or forts and camps. Nine date from the Early Middle Ages, mainly inscribed stones but also including a crannog. There are 78 sites from the post-Norman Medieval period, including castles, mottes and moated sites, churches, town defences and agricultural holdings. The 38 post-medieval sites are even more diverse, covering bridges, tramroads, aqueducts, agricultural sites and lost villages, lead mines, coal mines, industrial sites, and two war-time features from the 1940s.
The 254 scheduled sites dating to prehistoric periods are listed at List of prehistoric scheduled monuments in Powys (Brecknockshire)
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.

## Roman to modern scheduled monuments in Brecknockshire

The list is sorted by date, and then by community so that sites of similar age and locality are placed near each other. Clicking on the heading arrows will sort the list by that information.
| Name | Site type | Community | Location | Details | Period | SAM No & Refs |
| Roman Fort at Pen y Gaer | Roman fort | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′23″N 3°12′35″W﻿ / ﻿51.8897°N 3.2098°W﻿ / 51.8897; -3.2098﻿ (Roman Fort at Pen y Gaer), SO168219 | | 2Roman | BR174 |
| Abererbwll Roman Fort | Roman fort | Llangamarch, (also Llanfair-ar-y-bryn, see Carmarthenshire) | 52°03′36″N 3°40′46″W﻿ / ﻿52.06°N 3.6794°W﻿ / 52.06; -3.6794﻿ (Abererbwll Roman Fort), SN849415 | | 2Roman | CM373 |
| Y Pigwyn | Marching camp | Llywel, (also Myddfai, see Carmarthenshire) | 51°58′01″N 3°42′26″W﻿ / ﻿51.967°N 3.7071°W﻿ / 51.967; -3.7071﻿ (Y Pigwyn), SN828312 | | 2Roman | BR003 |
| Roman Road on Mynydd Illtyd, south-western section | Road | Maescar | 51°55′13″N 3°30′44″W﻿ / ﻿51.9202°N 3.5123°W﻿ / 51.9202; -3.5123﻿ (Roman Road on Mynydd Illtyd, south-western section), SN960257 | | 2Roman | BR224 |
| Roman Road on Mynydd Illtyd, North-Eastern section | Road | Trallong | 51°55′40″N 3°30′02″W﻿ / ﻿51.9277°N 3.5005°W﻿ / 51.9277; -3.5005﻿ (Roman Road on Mynydd Illtyd, North-Eastern section), SN969265 | | 2Roman | BR225 |
| Caerau Roman Site | Roman fort | Treflys | 52°08′23″N 3°34′27″W﻿ / ﻿52.1398°N 3.5743°W﻿ / 52.1398; -3.5743﻿ (Caerau Roman Site), SN923502 | | 2Roman | BR148 |
| Tynewydd Roman Road | Road | Treflys | 52°09′13″N 3°33′23″W﻿ / ﻿52.1536°N 3.5563°W﻿ / 52.1536; -3.5563﻿ (Tynewydd Roman Road), SN936517 | | 2Roman | BR380 |
| Brecon Gaer Roman Fort | Roman fort | Yscir | 51°57′23″N 3°27′06″W﻿ / ﻿51.9565°N 3.4517°W﻿ / 51.9565; -3.4517﻿ (The Gaer, Brecon), SO003296 | | 2Roman | BR001 |
| Roman Marching Camp NE of Maen Madog | Marching camp | Ystradfellte | 51°50′07″N 3°33′49″W﻿ / ﻿51.8354°N 3.5637°W﻿ / 51.8354; -3.5637﻿ (Roman Marching Camp NE of Maen Madog), SN923163 | | 2Roman | BR162 |
| Section of Road NE of Coelbren Fort | Road | Ystradfellte | 51°47′18″N 3°38′23″W﻿ / ﻿51.7883°N 3.6397°W﻿ / 51.7883; -3.6397﻿ (Section of Road NE of Coelbren Fort), SN870112 | | 2Roman | BR074 |
| Crickadarn Camp | Enclosure | Erwood | 52°04′10″N 3°19′56″W﻿ / ﻿52.0695°N 3.3323°W﻿ / 52.0695; -3.3323﻿ (Crickadarn Camp), SO087420 | | 3Early Medieval | BR033 |
| Cross-Slab in Churchyard | Cross | Glyn Tarell | 51°56′36″N 3°26′20″W﻿ / ﻿51.9433°N 3.439°W﻿ / 51.9433; -3.439﻿ (Cross-Slab in Churchyard), SO011281 | | 3Early Medieval | BR121 |
| Cross-Slab in Church | Cross-marked stone | Honddu Isaf | 51°58′53″N 3°24′28″W﻿ / ﻿51.9815°N 3.4079°W﻿ / 51.9815; -3.4079﻿ (Cross-Slab in Church), SO034323 | | 3Early Medieval | BR120 |
| Inscribed Stone in Church | Inscribed stone | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°54′25″N 3°11′33″W﻿ / ﻿51.907°N 3.1925°W﻿ / 51.907; -3.1925﻿ (Inscribed Stone in Church), SO180238 | | 3Early Medieval | BR109 |
| Cross-Slab in Church | Cross | Llanfrynach | 51°55′44″N 3°19′33″W﻿ / ﻿51.929°N 3.3257°W﻿ / 51.929; -3.3257﻿ (Cross-Slab in Church), SO089264 | | 3Early Medieval | BR122 |
| Crannog in Llangorse Lake | Crannog | Llangors | 51°56′01″N 3°16′07″W﻿ / ﻿51.9337°N 3.2685°W﻿ / 51.9337; -3.2685﻿ (Crannog in Llangorse Lake), SO128268 | A royal hall of the kings of Brycheiniog, now surviving as an artificial island constructed of an oak palisade into which layers of stone, and soil were added. Archaeological digs in the waterlogged conditions have discovered textiles, leather, bronze items, a reliquary and a dugout boat. | 3Early Medieval (9th century) | BR158 |
| Early Christian Inscribed Stone in Defynnog Church | Inscribed stone | Maescar | 51°56′22″N 3°33′54″W﻿ / ﻿51.9394°N 3.565°W﻿ / 51.9394; -3.565﻿ (Early Christian Inscribed Stone in Defynnog Church), SN925279 | | 3Early Medieval | BR182 |
| Ponsticill Inscribed Stone | Inscribed stone | Talybont-on-Usk | 51°48′35″N 3°20′45″W﻿ / ﻿51.8098°N 3.3457°W﻿ / 51.8098; -3.3457﻿ (Ponsticill Inscribed Stone), SO073132 | | 3Early Medieval | BR141 |
| Maen Madoc | Inscribed stone | Ystradfellte | 51°49′49″N 3°34′14″W﻿ / ﻿51.8302°N 3.5706°W﻿ / 51.8302; -3.5706﻿ (Maen Madoc), SN918157 | | 3Early Medieval | BR018 |
| Brecon Castle | Castle | Brecon | 51°56′58″N 3°23′38″W﻿ / ﻿51.9494°N 3.3938°W﻿ / 51.9494; -3.3938﻿ (Brecon Castle), SO043287 | | 4Medieval | BR022 |
| Castle Mound 800m NNW of Ty'n-y-Caeau | Motte | Brecon | 51°57′22″N 3°21′16″W﻿ / ﻿51.9561°N 3.3544°W﻿ / 51.9561; -3.3544﻿ (Castle Mound 800m NNW of Ty'n-y-Caeau), SO070295 | | 4Medieval | BR046 |
| St Eluned's Chapel and Well | Chapel | Brecon | 51°56′52″N 3°22′21″W﻿ / ﻿51.9478°N 3.3726°W﻿ / 51.9478; -3.3726﻿ (St Eluned's Chapel and Well), SO057286 | | 4Medieval | BR236 |
| Town Wall and Gatehouse at Captain's Walk | Town Wall | Brecon | 51°56′45″N 3°23′29″W﻿ / ﻿51.9458°N 3.3913°W﻿ / 51.9458; -3.3913﻿ (Town Wall and Gatehouse at Captain's Walk), SO045284 | | 4Medieval | BR177 |
| Town Wall at Watton Mount | Town defences | Brecon | 51°56′48″N 3°23′18″W﻿ / ﻿51.9467°N 3.3882°W﻿ / 51.9467; -3.3882﻿ (Town Wall at Watton Mount), SO046284 | | 4Medieval | BR150 |
| Bronllys Castle | Castle | Bronllys | 52°00′16″N 3°14′27″W﻿ / ﻿52.0044°N 3.2407°W﻿ / 52.0044; -3.2407﻿ (Bronllys Castle), SO149347 | | 4Medieval | BR008 |
| Bronllys moated site | Moated Site | Bronllys | 52°00′20″N 3°14′59″W﻿ / ﻿52.0056°N 3.2497°W﻿ / 52.0056; -3.2497﻿ (Bronllys moated site), SO143348 | | 4Medieval | BR058 |
| Builth Castle | Motte | Builth | 52°08′57″N 3°23′54″W﻿ / ﻿52.1492°N 3.3983°W﻿ / 52.1492; -3.3983﻿ (Builth Castle), SO044510 | | 4Medieval | BR031 |
| Caer Beris | Motte | Cilmery | 52°08′46″N 3°25′09″W﻿ / ﻿52.1461°N 3.4192°W﻿ / 52.1461; -3.4192﻿ (Caer Beris), SO029507 | | 4Medieval | BR093 |
| Crickhowell Castle | Castle | Crickhowell | 51°51′26″N 3°08′15″W﻿ / ﻿51.8572°N 3.1376°W﻿ / 51.8572; -3.1376﻿ (Crickhowell Castle), SO217182 | | 4Medieval | BR111 |
| Maes-Celyn Castle Mound | Motte | Crickhowell | 51°52′06″N 3°09′12″W﻿ / ﻿51.8682°N 3.1532°W﻿ / 51.8682; -3.1532﻿ (Maes-Celyn Castle Mound), SO206194 | | 4Medieval | BR055 |
| Cwmhindda Deserted Rural Settlement | Platform house | Duhonw | 52°06′58″N 3°24′15″W﻿ / ﻿52.1162°N 3.4041°W﻿ / 52.1162; -3.4041﻿ (Cwmhindda Deserted Rural Settlement), SO039473 | | 4Medieval | BR280 |
| Castle Earthwork 200m S of Coed Caeau | Ringwork | Erwood | 52°03′42″N 3°22′26″W﻿ / ﻿52.0618°N 3.3738°W﻿ / 52.0618; -3.3738﻿ (Castle Earthwork 200m S of Coed Caeau), SO059412 | | 4Medieval | BR179 |
| Gwenddwr Deserted Village | Deserted Rural Settlement | Erwood | 52°04′53″N 3°21′59″W﻿ / ﻿52.0813°N 3.3663°W﻿ / 52.0813; -3.3663﻿ (Gwenddwr Deserted Village), SO064434 | | 4Medieval | BR168 |
| Llanfilo Moated Site | Moated Site | Felin-fach | 51°59′03″N 3°17′03″W﻿ / ﻿51.9843°N 3.2842°W﻿ / 51.9843; -3.2842﻿ (Llanfilo Moated Site), SO119325 | | 4Medieval | BR152 |
| Medieval Building in Llanfilo Village | Building (Unclassified) | Felin-fach | 51°59′27″N 3°17′01″W﻿ / ﻿51.9907°N 3.2836°W﻿ / 51.9907; -3.2836﻿ (Medieval Building in Llanfilo Village), SO119332 | | 4Medieval | BR221 |
| Moated Site 670m NE of Lower Penwaun | Moated Site | Felin-fach | 51°58′46″N 3°20′07″W﻿ / ﻿51.9795°N 3.3352°W﻿ / 51.9795; -3.3352﻿ (Moated Site 670m NE of Lower Penwaun), SO083320 | | 4Medieval | BR180 |
| Moated Site 800m NE of Felinfach | Moated Site | Felin-fach | 51°59′35″N 3°18′42″W﻿ / ﻿51.993°N 3.3117°W﻿ / 51.993; -3.3117﻿ (Moated Site 800m NE of Felinfach), SO100335 | | 4Medieval | BR049 |
| Moated Site E of Pont-y-Bat Wood | Moated Site | Felin-fach | 52°00′08″N 3°17′42″W﻿ / ﻿52.0022°N 3.295°W﻿ / 52.0022; -3.295﻿ (Moated Site E of Pont-y-Bat Wood), SO112345 | | 4Medieval | BR050 |
| Moated Site in Llanfilo Village | Moated Site | Felin-fach | 51°59′24″N 3°17′02″W﻿ / ﻿51.9901°N 3.284°W﻿ / 51.9901; -3.284﻿ (Moated Site in Llanfilo Village), SO119331 | | 4Medieval | BR195 |
| Oaklands Moated Site | Moated Site | Felin-fach | 51°58′45″N 3°20′50″W﻿ / ﻿51.9793°N 3.3473°W﻿ / 51.9793; -3.3473﻿ (Oaklands Moated Site), SO075320 | | 4Medieval | BR041 |
| Cilwhybert Castle Mound | Motte | Glyn Tarell | 51°55′51″N 3°26′06″W﻿ / ﻿51.9309°N 3.4349°W﻿ / 51.9309; -3.4349﻿ (Cilwhybert Castle Mound), SO014267 | | 4Medieval | BR127 |
| Craig Cerrig-Gleisiad Deserted Rural Settlement | Deserted Rural Settlement | Glyn Tarell | 51°53′31″N 3°30′17″W﻿ / ﻿51.8919°N 3.5048°W﻿ / 51.8919; -3.5048﻿ (Craig Cerrig-Gleisiad Deserted Rural Settlement), SN965225 | | 4Medieval | BR266 |
| Earthwork 675m W of Dan-y-Cefn | Ringwork | Glyn Tarell | 51°55′58″N 3°26′35″W﻿ / ﻿51.9327°N 3.4431°W﻿ / 51.9327; -3.4431﻿ (Earthwork 675m W of Dan-y-Cefn), SO008270 | | 4Medieval | BR170 |
| Aberllynfi chapel | Chapel | Gwernyfed | 52°02′03″N 3°12′28″W﻿ / ﻿52.0342°N 3.2079°W﻿ / 52.0342; -3.2079﻿ (Aberllynfi chapel), SH172379 | | 4Medieval | BR351 |
| Glasbury Old Church | Church | Gwernyfed | 52°02′33″N 3°12′09″W﻿ / ﻿52.0425°N 3.2024°W﻿ / 52.0425; -3.2024﻿ (Glasbury Old Church), SO176389 | | 4Medieval | BR350 |
| Great House Mound & Bailey Castle | Motte & Bailey | Gwernyfed | 52°02′05″N 3°12′31″W﻿ / ﻿52.0348°N 3.2085°W﻿ / 52.0348; -3.2085﻿ (Great House Mound & Bailey Castle), SO171380 | | 4Medieval | BR080 |
| Castle Mound near Swan Hotel | Motte | Hay | 52°04′21″N 3°07′48″W﻿ / ﻿52.0726°N 3.1299°W﻿ / 52.0726; -3.1299﻿ (Castle Mound near Swan Hotel), SO226421 | | 4Medieval | BR077 |
| Hay Castle | Castle | Hay | 52°04′25″N 3°07′33″W﻿ / ﻿52.0737°N 3.1257°W﻿ / 52.0737; -3.1257﻿ (Hay Castle), SO229423 | | 4Medieval | BR076 |
| Castell Madoc Ringwork | Motte | Honddu Isaf | 52°01′23″N 3°25′19″W﻿ / ﻿52.0231°N 3.4219°W﻿ / 52.0231; -3.4219﻿ (Castell Madoc Ringwork), SO025370 | | 4Medieval | BR155 |
| Castell Madoc Mound | Motte | Honddu Isaf | 52°01′19″N 3°25′23″W﻿ / ﻿52.0219°N 3.423°W﻿ / 52.0219; -3.423﻿ (Castle Madoc Mound), SO024369 | | 4Medieval | BR192 |
| Llandefaelog Fach Motte | Motte | Honddu Isaf | 51°58′52″N 3°24′33″W﻿ / ﻿51.9812°N 3.4093°W﻿ / 51.9812; -3.4093﻿ (Llandefaelog Fach Motte), SO033323 | | 4Medieval | BR191 |
| Earthworks SW of Church | Earthwork (unclassified) | Llanafan Fawr | 52°11′21″N 3°30′47″W﻿ / ﻿52.1893°N 3.513°W﻿ / 52.1893; -3.513﻿ (Earthworks SW of Church), SN966556 | | 4Medieval | BR089 |
| Hafotau Settlement on Bryn Melys | Rectangular hut settlement | Llanafan Fawr | 52°13′42″N 3°33′57″W﻿ / ﻿52.2282°N 3.5659°W﻿ / 52.2282; -3.5659﻿ (Hafotau Settlement on Bryn Melys), SN931600 | | 4Medieval | BR215 |
| Ringwork near Coed Ty-Mawr | Ringwork | Llanafan Fawr | 52°12′27″N 3°29′06″W﻿ / ﻿52.2075°N 3.4851°W﻿ / 52.2075; -3.4851﻿ (Ringwork near Coed Ty-Mawr), SN986576 | | 4Medieval | BR098 |
| Alexanderstone Mound and Bailey Castle | Motte & Bailey | Llanddew | 51°57′42″N 3°21′02″W﻿ / ﻿51.9616°N 3.3506°W﻿ / 51.9616; -3.3506﻿ (Alexanderstone Mound and Bailey Castle), SO073301 | | 4Medieval | BR045 |
| Earthworks South West of Llanddew Church | Earthwork (unclassified) | Llanddew | 51°58′01″N 3°22′41″W﻿ / ﻿51.967°N 3.378°W﻿ / 51.967; -3.378﻿ (Earthworks South West of Llanddew Church), SO054307 | | 4Medieval | BR196 |
| Llanddew Castle | Castle | Llanddew | 51°58′03″N 3°22′34″W﻿ / ﻿51.9676°N 3.376°W﻿ / 51.9676; -3.376﻿ (Llanddew Castle), SO055307 | | 4Medieval | BR057 |
| Castell Blaen-Llynfi | Castle | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′53″N 3°14′38″W﻿ / ﻿51.898°N 3.244°W﻿ / 51.898; -3.244﻿ (Castell Blaen-Llynfi), SO145228 | | 4Medieval | BR009 |
| Tretower Barn | Barn | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′00″N 3°11′01″W﻿ / ﻿51.8834°N 3.1837°W﻿ / 51.8834; -3.1837﻿ (Tretower Barn), SO186211 | | 4Medieval | BR146 |
| Tretower Castle | Castle | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′02″N 3°11′10″W﻿ / ﻿51.8839°N 3.1862°W﻿ / 51.8839; -3.1862﻿ (Tretower Castle), SO184212 | | 4Medieval | BR014 |
| Tretower Court | House (domestic) | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′00″N 3°11′05″W﻿ / ﻿51.8832°N 3.1846°W﻿ / 51.8832; -3.1846﻿ (Tretower Court), SO185211 | | 4Medieval | BR117 |
| Tretower Shrunken Medieval Settlement | Shrunken medieval village | Llanfihangel Cwmdu with Bwlch and Cathedine | 51°53′05″N 3°11′04″W﻿ / ﻿51.8848°N 3.1844°W﻿ / 51.8848; -3.1844﻿ (Tretower Shrunken Medieval Settlement), SO185213 | | 4Medieval | BR238 |
| Hen Castell | Moated Site | Llangattock | 51°50′32″N 3°08′38″W﻿ / ﻿51.8422°N 3.144°W﻿ / 51.8422; -3.144﻿ (Hen Castell), SO212165 | | 4Medieval | BR056 |
| House Platforms and Hollow Ways in the Shrunken Medieval Village of Llanfihangel Tal-y-Llyn | House platform | Llangors | 51°56′54″N 3°17′21″W﻿ / ﻿51.9483°N 3.2893°W﻿ / 51.9483; -3.2893﻿ (House Platforms and Hollow Ways in the Shrunken Medieval Village of Llanfihangel Tal-y-Llyn), SO114285 | | 4Medieval | BR220 |
| Twmpan Castle Mound | Motte | Llangors | 51°55′22″N 3°16′22″W﻿ / ﻿51.9228°N 3.2728°W﻿ / 51.9228; -3.2728﻿ (Twmpan Castle Mound), SO125256 | | 4Medieval | BR054 |
| Llangynidr Deserted Medieval Village (part of) | Deserted Medieval Village | Llangynidr | 51°51′56″N 3°13′45″W﻿ / ﻿51.8655°N 3.2293°W﻿ / 51.8655; -3.2293﻿ (Llangynidr Deserted Medieval Village (part of)), SO154192 | | 4Medieval | BR187 |
| Pen Bwlych Glascwm Pillow Mounds | Pillow mound | Llangynidr | 51°50′19″N 3°19′07″W﻿ / ﻿51.8386°N 3.3185°W﻿ / 51.8386; -3.3185﻿ (Pen Bwlych Glascwm Pillow Mounds), SO092163 | | 4Medieval | BR252 |
| Llanthomas Castle Mound | Motte | Llanigon | 52°03′22″N 3°09′17″W﻿ / ﻿52.056°N 3.1548°W﻿ / 52.056; -3.1548﻿ (Llanthomas Castle Mound), SO209403 | | 4Medieval | BR078 |
| The Scottish Pedlar Wayside Cross | Cross | Llanigon | 52°02′25″N 3°07′30″W﻿ / ﻿52.0403°N 3.125°W﻿ / 52.0403; -3.125﻿ (The Scottish Pedlar Wayside Cross), SO229385 | | 4Medieval | BR200 |
| Corn Drying Kiln 340m S of Cryn-Fryn | Corn-drying kiln | Llanwrthwl | 52°14′45″N 3°30′10″W﻿ / ﻿52.2457°N 3.5027°W﻿ / 52.2457; -3.5027﻿ (Corn Drying Kiln 340m S of Cryn-Fryn), SN974619 | | 4Medieval | BR183 |
| Hafotau Settlement on Esgair Gwar-y-Cae | Rectangular hut settlement | Llanwrthwl | 52°14′27″N 3°35′08″W﻿ / ﻿52.2407°N 3.5855°W﻿ / 52.2407; -3.5855﻿ (Hafotau Settlement on Esgair Gwar-y-Cae), SN918614 | | 4Medieval | BR216 |
| Allt Fach Deserted Rural Settlement | Deserted Rural Settlement | Llywel | 51°50′39″N 3°40′38″W﻿ / ﻿51.8441°N 3.6771°W﻿ / 51.8441; -3.6771﻿ (Allt Fach Deserted Rural Settlement), SN845175 | | 4Medieval | BR263 |
| Deserted Farmstead South of Ffynnon yr Oerfa | Rectangular hut settlement | Llywel | 51°59′10″N 3°39′17″W﻿ / ﻿51.9861°N 3.6548°W﻿ / 51.9861; -3.6548﻿ (Deserted Farmstead South of Ffynnon yr Oerfa), SN864332 | | 4Medieval | BR223 |
| Rectangular Hut, Afon Tawe | Rectangular hut | Llywel | 51°52′57″N 3°40′16″W﻿ / ﻿51.8825°N 3.6711°W﻿ / 51.8825; -3.6711﻿ (Rectangular Hut, Afon Tawe), SN850217 | | 4Medieval | BR260 |
| Trecastle Mound and Bailey Castle | Motte & Bailey | Llywel | 51°56′58″N 3°37′39″W﻿ / ﻿51.9494°N 3.6274°W﻿ / 51.9494; -3.6274﻿ (Trecastle Mound and Bailey Castle), SN882291 | | 4Medieval | BR026 |
| Castell-Du, Sennybridge | Castle | Maescar | 51°56′37″N 3°34′23″W﻿ / ﻿51.9436°N 3.573°W﻿ / 51.9436; -3.573﻿ (Castell-Du, Sennybridge), SN919284 | | 4Medieval | BR126 |
| Clawdd British | Enclosure | Maescar | 52°01′07″N 3°39′33″W﻿ / ﻿52.0186°N 3.6591°W﻿ / 52.0186; -3.6591﻿ (Clawdd British), SN862368 | | 4Medieval | BR032 |
| Hirllwyn Camp | Enclosure | Maescar | 52°01′51″N 3°37′16″W﻿ / ﻿52.0308°N 3.6211°W﻿ / 52.0308; -3.6211﻿ (Hirllwyn Camp), SN888381 | | 4Medieval | BR143 |
| Cefn Barn Ringwork | Ringwork | Talgarth | 51°58′28″N 3°14′45″W﻿ / ﻿51.9745°N 3.2458°W﻿ / 51.9745; -3.2458﻿ (Cefn Barn Ringwork), SO145314 | | 4Medieval | BR088 |
| Porthamel Tower | Tower | Talgarth | 52°00′32″N 3°13′33″W﻿ / ﻿52.0088°N 3.2259°W﻿ / 52.0088; -3.2259﻿ (Porthamal Tower), SO159351 | | 4Medieval | BR047 |
| Tredustan Castle Mound | Motte | Talgarth | 51°59′01″N 3°15′13″W﻿ / ﻿51.9836°N 3.2536°W﻿ / 51.9836; -3.2536﻿ (Tredustan Castle Mound), SO140324 | | 4Medieval | BR082 |
| Trefecca Castle Mound | Motte | Talgarth | 51°58′58″N 3°15′04″W﻿ / ﻿51.9827°N 3.251°W﻿ / 51.9827; -3.251﻿ (Trefecca Castle Mound), SO141323 | | 4Medieval | BR083 |
| Trefecca-Fawr Moated Site | Fishpond | Talgarth | 51°58′40″N 3°14′58″W﻿ / ﻿51.9778°N 3.2494°W﻿ / 51.9778; -3.2494﻿ (Trefecca-Fawr Moated Site), SO142317 | | 4Medieval | BR087 |
| Cwm Cwareli Longhouse and Long Hut | Longhouse | Talybont-on-Usk | 51°53′09″N 3°22′15″W﻿ / ﻿51.8858°N 3.3707°W﻿ / 51.8858; -3.3707﻿ (Cwm Cwareli Longhouse and Long Hut), SO058217 | | 4Medieval | BR282 |
| Tor y Foel Deserted Rural Settlement | Platform house | Talybont-on-Usk | 51°51′51″N 3°17′27″W﻿ / ﻿51.8643°N 3.2907°W﻿ / 51.8643; -3.2907﻿ (Tor y Foel Deserted Rural Settlement), SO112192 | | 4Medieval | BR283 |
| Churchyard Cross, St Issau's Church | Cross | The Vale of Grwyney | 51°53′45″N 3°02′57″W﻿ / ﻿51.8957°N 3.0493°W﻿ / 51.8957; -3.0493﻿ (Churchyard Cross, St Issau's Church), SO278224 | | 4Medieval | BR172 |
| Cwm Beusych Deserted Rural Settlement | Platform house | The Vale of Grwyney | 51°53′15″N 3°04′26″W﻿ / ﻿51.8876°N 3.0739°W﻿ / 51.8876; -3.0739﻿ (Cwm Beusych Deserted Rural Settlement), SO261215 | | 4Medieval | BR298 |
| Llwyn y Brain Deserted Rural Settlement | Platform house | The Vale of Grwyney | 51°54′05″N 3°03′13″W﻿ / ﻿51.9014°N 3.0537°W﻿ / 51.9014; -3.0537﻿ (Llwyn y Brain Deserted Rural Settlement), SO276230 | | 4Medieval | BR300 |
| Two platform buildings on eastern side of Partrishow Hill | Platform House | The Vale of Grwyney | 51°53′21″N 3°03′17″W﻿ / ﻿51.8892°N 3.0547°W﻿ / 51.8892; -3.0547﻿ (Two platform buildings on eastern side of Partrishow Hill), SO275217 | | 4Medieval | BR416 |
| Y Cwrt Deserted Rural Settlement | Platform house | The Vale of Grwyney | 51°53′14″N 3°04′02″W﻿ / ﻿51.8871°N 3.0673°W﻿ / 51.8871; -3.0673﻿ (Y Cwrt Deserted Rural Settlement), SO266214 | | 4Medieval | BR299 |
| Cwm Camlais Castle | Motte | Trallong | 51°55′24″N 3°31′09″W﻿ / ﻿51.9234°N 3.5192°W﻿ / 51.9234; -3.5192﻿ (Cwm Camlais Castle), SN956260 | | 4Medieval | BR037 |
| Tir-cyd Deserted Rural Settlement | Deserted Rural Settlement | Trallong | 52°01′39″N 3°33′39″W﻿ / ﻿52.0274°N 3.5608°W﻿ / 52.0274; -3.5608﻿ (Tir-cyd Deserted Rural Settlement), SN930377 | | 4Medieval | BR290 |
| Caerau Castle Mound | Motte | Treflys | 52°08′20″N 3°34′30″W﻿ / ﻿52.139°N 3.575°W﻿ / 52.139; -3.575﻿ (Caerau Castle Mound), SN923501 | | 4Medieval | BR130 |
| Fforest Castle Mound | Motte | Treflys | 52°09′21″N 3°34′51″W﻿ / ﻿52.1559°N 3.5809°W﻿ / 52.1559; -3.5809﻿ (Fforest Castle Mound), SN919520 | | 4Medieval | BR131 |
| Aberyscir Castle Mound | Motte | Yscir | 51°57′20″N 3°27′22″W﻿ / ﻿51.9555°N 3.4561°W﻿ / 51.9555; -3.4561﻿ (Aberyscir Castle Mound), SO000295 | | 4Medieval | BR021 |
| Castell Coch | Motte & Bailey | Ystradfellte | 51°49′08″N 3°32′43″W﻿ / ﻿51.8189°N 3.5453°W﻿ / 51.8189; -3.5453﻿ (Castell Coch), SN935144 | | 4Medieval | BR081 |
| Enclosures East of Afon Llia | Enclosure - Agricultural | Ystradfellte | 51°51′15″N 3°33′31″W﻿ / ﻿51.8541°N 3.5586°W﻿ / 51.8541; -3.5586﻿ (Enclosures East of Afon Llia), SN927184 | | 4Medieval | BR258 |
| Brecon Bridge | Bridge | Brecon | 51°56′51″N 3°23′37″W﻿ / ﻿51.9476°N 3.3937°W﻿ / 51.9476; -3.3937﻿ (Brecon Bridge), SO043285 | | 5Post-Medieval/Modern | BR004 |
| Pont Gihirych | Bridge | Cray | 51°52′41″N 3°37′12″W﻿ / ﻿51.8781°N 3.6201°W﻿ / 51.8781; -3.6201﻿ (Pont Gihirych), SN885211 | | 5Post-Medieval/Modern | BR199 |
| Porth Mawr | Gatehouse | Crickhowell | 51°51′37″N 3°08′15″W﻿ / ﻿51.8604°N 3.1376°W﻿ / 51.8604; -3.1376﻿ (Porth Mawr), SO217185 | | 5Post-Medieval/Modern | BR114 |
| Cefn Corast Deserted Rural Settlement | Rectangular hut | Duhonw | 52°06′13″N 3°27′43″W﻿ / ﻿52.1036°N 3.4619°W﻿ / 52.1036; -3.4619﻿ (Cefn Corast Deserted Rural Settlement), SN999460 | | 5Post-Medieval/Modern | BR289 |
| Hendy Long Hut | Rectangular hut | Erwood | 52°06′41″N 3°22′41″W﻿ / ﻿52.1114°N 3.378°W﻿ / 52.1114; -3.378﻿ (Hendy Long Hut), SO057467 | | 5Post-Medieval/Modern | BR281 |
| Y Gyrn Hut Platform (N) | House platform | Glyn Tarell | 51°53′40″N 3°28′43″W﻿ / ﻿51.8945°N 3.4786°W﻿ / 51.8945; -3.4786﻿ (Y Gyrn Hut Platform (N)), SN983228 | | 5Post-Medieval/Modern | BR390 |
| Y Gyrn Hut Platform (S) | House platform | Glyn Tarell | 51°53′32″N 3°28′47″W﻿ / ﻿51.8923°N 3.4798°W﻿ / 51.8923; -3.4798﻿ (Y Gyrn Hut Platform (S)), SN982225 | | 5Post-Medieval/Modern | BR393 |
| Y Gyrn Hut Platforms | House platform | Glyn Tarell | 51°53′35″N 3°28′44″W﻿ / ﻿51.8931°N 3.4788°W﻿ / 51.8931; -3.4788﻿ (Y Gyrn Hut Platforms), SN983226 | | 5Post-Medieval/Modern | BR392 |
| Y Gyrn Longhuts | Deserted Rural Settlement | Glyn Tarell | 51°53′37″N 3°28′44″W﻿ / ﻿51.8935°N 3.4788°W﻿ / 51.8935; -3.4788﻿ (Y Gyrn Longhuts), SN983228 | Blaenglyn longhouse | 5Post-Medieval/Modern | BR391 |
| Garden Earthworks at Old Gwernyfed | Garden | Gwernyfed | 52°01′16″N 3°11′38″W﻿ / ﻿52.0212°N 3.194°W﻿ / 52.0212; -3.194﻿ (Garden Earthworks at Old Gwernyfed), SO181365 | | 5Post-Medieval/Modern | BR193 |
| Brynich Aqueduct (Brecknock & Abergavenny Canal) | Aqueduct | Llanfrynach | 51°56′11″N 3°20′27″W﻿ / ﻿51.9365°N 3.3409°W﻿ / 51.9365; -3.3409﻿ (Brynich Aqueduct (Brecknock & Abergavenny Canal)), SO079273 | | 5Post-Medieval/Modern | BR185 |
| Llwyn-on Farmstead | Farmstead | Llanfrynach | 51°50′42″N 3°24′31″W﻿ / ﻿51.8451°N 3.4087°W﻿ / 51.8451; -3.4087﻿ (Llwyn-on Farmstead), SO030172 | | 5Post-Medieval/Modern | BR240 |
| Crickhowell Bridge | Bridge | Llangattock | 51°51′23″N 3°08′32″W﻿ / ﻿51.8564°N 3.1421°W﻿ / 51.8564; -3.1421﻿ (Crickhowell Bridge), SO214181 | | 5Post-Medieval/Modern | BR005 |
| Disgwylfa Tramroads | Tramroad | Llangattock, (also Llanelly), (see also Monmouthshire) | 51°49′08″N 3°08′14″W﻿ / ﻿51.8189°N 3.1371°W﻿ / 51.8189; -3.1371﻿ (Disgwylfa Tramroads), SO217139 | | 5Post Medieval/Modern | MM340 |
| Llangattock Tramroad Inclines | Tramroad | Llangattock | 51°50′19″N 3°09′51″W﻿ / ﻿51.8385°N 3.1641°W﻿ / 51.8385; -3.1641﻿ (Llangattock Tramroad Inclines), SO198161 | | 5Post-Medieval/Modern | BR234 |
| Nant Morlais Hafod | Enclosure | Llangynidr | 51°47′51″N 3°20′59″W﻿ / ﻿51.7974°N 3.3498°W﻿ / 51.7974; -3.3498﻿ (Nant Morlais Hafod), SO070118 | | 5Post-Medieval/Modern | BR279 |
| Cerrig Llwydion Deserted Rural Settlement | Deserted Rural Settlement | Llanwrthwl | 52°14′51″N 3°38′25″W﻿ / ﻿52.2474°N 3.6402°W﻿ / 52.2474; -3.6402﻿ (Cerrig Llwydion Deserted Rural Settlement), SN881622 | | 5Post-Medieval/Modern | BR287 |
| Dalrhiw Lead Mine | Lead mine | Llanwrthwl | 52°14′02″N 3°38′03″W﻿ / ﻿52.2338°N 3.6341°W﻿ / 52.2338; -3.6341﻿ (Dalrhiw Lead Mine), SN885607 | | 5Post-Medieval/Modern | BR231 |
| Hafod Rhiwnant Deserted Rural Settlement | Longhouse | Llanwrthwl | 52°13′38″N 3°38′48″W﻿ / ﻿52.2271°N 3.6466°W﻿ / 52.2271; -3.6466﻿ (Hafod Rhiwnant Deserted Rural Settlement), SN876600 | | 5Post-Medieval/Modern | RD199 |
| Nant-y-Car South Lead Mine | Lead mine | Llanwrthwl | 52°14′05″N 3°37′58″W﻿ / ﻿52.2348°N 3.6328°W﻿ / 52.2348; -3.6328﻿ (Nant-y-Car South Lead Mine), SN885608 | | 5Post-Medieval/Modern | BR232 |
| Nant-y-Garw Lead Mine | Lead mine | Llanwrthwl | 52°13′56″N 3°38′54″W﻿ / ﻿52.2323°N 3.6482°W﻿ / 52.2323; -3.6482﻿ (Nant-y-Garw Lead Mine), SN875606 | | 5Post-Medieval/Modern | BR233 |
| Nant-y-Gro Dam | Dam | Llanwrthwl | 52°15′32″N 3°34′51″W﻿ / ﻿52.2589°N 3.5809°W﻿ / 52.2589; -3.5809﻿ (Nant-y-Gro Dam), SN921634 | | 5Post-Medieval/Modern | BR387 |
| Nant y Gaseg long hut | Rectangular hut | Maescar | 51°52′10″N 3°31′31″W﻿ / ﻿51.8694°N 3.5254°W﻿ / 51.8694; -3.5254﻿ (Nant y Gaseg long hut), SN950200 | | 5Post-Medieval/Modern | BR284 |
| Pant-y-Blodau Deserted Rural Settlement | Rectangular hut | Maescar | 52°01′25″N 3°36′58″W﻿ / ﻿52.0237°N 3.6161°W﻿ / 52.0237; -3.6161﻿ (Pant-y-Blodau Deserted Rural Settlement), SN892373 | | 5Post-Medieval/Modern | BR288 |
| Pillow Mounds at Pant Mawr | Pillow mound | Tawe-Uchaf | 51°48′27″N 3°37′06″W﻿ / ﻿51.8074°N 3.6183°W﻿ / 51.8074; -3.6183﻿ (Pillow Mounds at Pant Mawr), SN885133 | | 5Post-Medieval/Modern | BR173 |
| Afon Hepste Settlement Enclosure | Enclosure - Domestic | Ystradfellte | 51°48′59″N 3°29′12″W﻿ / ﻿51.8164°N 3.4867°W﻿ / 51.8164; -3.4867﻿ (Afon Hepste Settlement Enclosure), SN976141 | | 5Post-Medieval/Modern | BR412 |
| Glynneath Gunpowder Works | Industrial monument | Ystradfellte, (also Hirwaun), (see also Rhondda, Cynon, Taff) | 51°45′57″N 3°33′55″W﻿ / ﻿51.7658°N 3.5654°W﻿ / 51.7658; -3.5654﻿ (Glynneath Gunpowder Works), SN920086 | | 5Post-Medieval/Modern | BR230 |
| Mynydd y Garn Enclosure | Enclosure | Ystradfellte | 51°48′35″N 3°30′21″W﻿ / ﻿51.8096°N 3.5059°W﻿ / 51.8096; -3.5059﻿ (Mynydd y Garn Enclosure), SN962134 | | 5Post-Medieval/Modern | BR410 |
| Mynydd y Garn Lluest East | Enclosure | Ystradfellte | 51°48′42″N 3°30′29″W﻿ / ﻿51.8118°N 3.508°W﻿ / 51.8118; -3.508﻿ (Mynydd y Garn Lluest East), SN961136 | | 5Post-Medieval/Modern | BR409 |
| Mynydd y Garn Lluest West | Enclosure | Ystradfellte | 51°48′30″N 3°30′36″W﻿ / ﻿51.8083°N 3.51°W﻿ / 51.8083; -3.51﻿ (Mynydd y Garn Lluest West), SN959132 | | 5Post-Medieval/Modern | BR408 |
| Abercrave Ironworks | Industrial monument | Ystradgynlais | 51°47′58″N 3°43′38″W﻿ / ﻿51.7994°N 3.7272°W﻿ / 51.7994; -3.7272﻿ (Abercrave Ironworks), SN809126 | | 5Post-Medieval/Modern | BR222 |
| Canal Aqueduct over the River Twrch, Ystalyfera | Aqueduct | Ystradgynlais, (also Ystalyfera, see Neath Port Talbot) | 51°46′06″N 3°46′48″W﻿ / ﻿51.7684°N 3.7799°W﻿ / 51.7684; -3.7799﻿ (Canal Aqueduct over the River Twrch, Ystalyfera), SN772092 | Stone aqueduct built over a weir, carrying the Swansea Canal over the River Twrch. Its three massive arches make it the largest of the five aqueducts on the canal. Built in 1798 by Thomas Sheasby, it was innovative in using Hydraulic cement to line the trough instead of puddled clay. Its proximity to the Capitol Cinema gave it the local name of 'Capitol Bridge'. It was restored in 1995 but is not currently water-filled, the canal route on either side being dry. | 5Post-Medieval/Modern (1798) | GM396 |
| Claypon's Tramroad at Ystradgynlais | Tramroad | Ystradgynlais, (also Seven Sisters), (also Tawe-Uchaf), (see also Neath Port Talbot) | 51°46′24″N 3°43′18″W﻿ / ﻿51.7734°N 3.7218°W﻿ / 51.7734; -3.7218﻿ (Tramroad at Ystradgynlais), SN812097 | Early tramroad, bringing coal from Drim Colliery and limestone (needed as a flux) from the quarries of Mynydd y Drum to the Ynyscedwyn Ironworks in the Swansea Valley. Built by Joseph Claypon in 1832 and in use until 1867, the tramroad linked with the Brecon Forest Tramroad, and parts were later incorporated into the Swansea Vale Railway. | 5Post-Medieval/Modern (1832) | GM399 |
| Cribarth Limestone Quarries and Tramroads | Quarry | Ystradgynlais | 51°48′49″N 3°42′05″W﻿ / ﻿51.8136°N 3.7013°W﻿ / 51.8136; -3.7013﻿ (Cribarth Limestone Quarries and Tramroads), SN828141 | | 5Post-Medieval/Modern | BR237 |
| Lefel Fawr Coal Adit | Coal Adit | Ystradgynlais | 51°47′53″N 3°43′09″W﻿ / ﻿51.798°N 3.7193°W﻿ / 51.798; -3.7193﻿ (Lefel Fawr Coal Adit), SN815124 | | 5Post-Medieval/Modern | BR201 |
| Ynysgedwyn Colliery, Fan House | Fan House | Ystradgynlais | 51°47′10″N 3°44′20″W﻿ / ﻿51.786°N 3.7388°W﻿ / 51.786; -3.7388﻿ (Ynysgedwyn Colliery, Fan House), SN801111 | Colliery ventilation shaft Guibal fan house, built around 1880, for Hendre-ladis Colliery, later Ynysgedwyn colliery, which closed in 1967. | 5Post-Medieval/Modern | BR198 |
| Coed Chwefri Vickers Machine Gun Emplacement | Pillbox | Cilmery | 52°09′01″N 3°25′06″W﻿ / ﻿52.1503°N 3.4182°W﻿ / 52.1503; -3.4182﻿ (Coed Chwefri Vickers Machine Gun Emplacement), SO030511 | Polygonal concrete pillbox with three Embrasures and gun platforms, with views across the Chwefri valley, close to Builth Wells. | 5.9Post-Medieval/Modern | BR399 |
| Storey Arms Anti-invasion Defences | Infantry support trench | Glyn Tarell | 51°52′03″N 3°28′16″W﻿ / ﻿51.8676°N 3.4712°W﻿ / 51.8676; -3.4712﻿ (Storey Arms Anti-invasion Defences), SN988198 | Dating to the early part of World War II, two pillboxes, trenches, and two lines of anti-tank blocks formed part of the Western Command Stop Line, in case of an invasion via Ireland. | 5.9Post-Medieval/Modern | BR337 |
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