# List of scheduled monuments in Caerphilly County Borough

Caerphilly County Borough straddles the boundary of the historic counties of Glamorgan and Monmouthshire in South Wales. The 46 scheduled monuments include burial cairns from the Bronze Age, an Iron Age hillfort, and Roman camps. The medieval sites include two castles and a further four mottes as well as dwellings, crosses and churches. Finally the post-medieval sites include the blast furnaces and ironworks of the industrial period.
Scheduled monuments have statutory protection. 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 Glamorgan-Gwent Archaeological Trust.

## Scheduled monuments in Caerphilly

| Name | Site type | Community | Location | Details | Historic County | Period | SAM No & Refs |
| Cairnfield on Mynydd Eglwysilan | Round cairn | Aber Valley | 51°37′20″N 3°16′45″W﻿ / ﻿51.6223°N 3.2792°W﻿ / 51.6223; -3.2792﻿ (Cairnfield on Mynydd Eglwysilan), ST115922 | | Glamorganshire | 1Prehistoric | GM352 |
| Garnedd Lwyd | Round cairn | Aber Valley | 51°36′18″N 3°17′25″W﻿ / ﻿51.6051°N 3.2904°W﻿ / 51.6051; -3.2904﻿ (Garnedd Lwyd), ST107903 | | Glamorganshire | 1Prehistoric | GM462 |
| Two Round Cairns on the Bryn | Round cairn | Aber Valley | 51°36′35″N 3°14′52″W﻿ / ﻿51.6096°N 3.2479°W﻿ / 51.6096; -3.2479﻿ (Two Round Cairns on the Bryn), ST136908 | | Glamorganshire | 1Prehistoric | GM463 |
| Begwns Round Barrow, Mynydd Machen | Round cairn | Bedwas, Trethomas and Machen | 51°36′13″N 3°07′20″W﻿ / ﻿51.6036°N 3.1222°W﻿ / 51.6036; -3.1222﻿ (Begwns Round Barrow, Mynydd Machen), ST223900 | | Monmouthshire | 1Prehistoric | MM071 |
| Cairn 270m N of Pont Ffosyrhebog | Round cairn | Darran Valley | 51°43′00″N 3°17′09″W﻿ / ﻿51.7168°N 3.2857°W﻿ / 51.7168; -3.2857﻿ (Cairn 270m N of Pont Ffosyrhebog), SO112027 | | Glamorganshire | 1Prehistoric | GM313 |
| Maen Cattwg (cup-marked stone) | Cup-marked stone | Gelligaer | 51°40′08″N 3°15′50″W﻿ / ﻿51.6689°N 3.2638°W﻿ / 51.6689; -3.2638﻿ (Maen Cattwg (cup-marked stone)), ST126974 | | Glamorganshire | 1Prehistoric | GM176 |
| Bryn Owen Farm Cairns, Llanfabon | Round cairn | Llanbradach | 51°36′35″N 3°14′16″W﻿ / ﻿51.6096°N 3.2378°W﻿ / 51.6096; -3.2378﻿ (Bryn Owen Farm Cairns, Llanfabon), ST143908 | | Glamorganshire | 1Prehistoric | GM051 |
| Cairn Cemetery on Mynydd Bach, Bedwas | Round cairn | Maesycwmmer | 51°37′14″N 3°12′09″W﻿ / ﻿51.6206°N 3.2025°W﻿ / 51.6206; -3.2025﻿ (Cairn Cemetery on Mynydd Bach, Bedwas), ST168919 | | Monmouthshire | 1Prehistoric | MM196 |
| Pen-y-Rhiw Round Cairn | Round cairn | Maesycwmmer | 51°37′13″N 3°12′12″W﻿ / ﻿51.6204°N 3.2033°W﻿ / 51.6204; -3.2033﻿ (Pen-y-Rhiw Round Cairn), ST167919 | | Monmouthshire | 1Prehistoric | MM149 |
| Carneddi Llwydion | Round cairn | Nelson | 51°37′11″N 3°17′38″W﻿ / ﻿51.6198°N 3.294°W﻿ / 51.6198; -3.294﻿ (Carneddi Llwydion), ST105920 | | Glamorganshire | 1Prehistoric | GM302 |
| Round Cairn 315m S of Upper Wenallt | Round cairn | Risca | 51°36′32″N 3°04′31″W﻿ / ﻿51.609°N 3.0754°W﻿ / 51.609; -3.0754﻿ (Round Cairn 315m S of Upper Wenallt), ST256905 | | Monmouthshire | 1Prehistoric | MM046 |
| Twyn Cae-Hugh Round Barrow | Round barrow | Ynysddu | 51°36′59″N 3°11′41″W﻿ / ﻿51.6163°N 3.1947°W﻿ / 51.6163; -3.1947﻿ (Twyn Cae-Hugh Round Barrow), ST173915 | | Monmouthshire | 1Prehistoric | MM033 |
| Twyn-Yr-Oerfel Round Barrows | Round barrow | Ynysddu | 51°36′33″N 3°11′02″W﻿ / ﻿51.6091°N 3.1839°W﻿ / 51.6091; -3.1839﻿ (Twyn-Yr-Oerfel Round Barrows), ST181906 | | Monmouthshire | 1Prehistoric | MM070 |
| Ruperra Hillfort and Motte | Hillfort | Rudry | 51°34′24″N 3°07′23″W﻿ / ﻿51.5733°N 3.1231°W﻿ / 51.5733; -3.1231﻿ (Ruperra Hillfort and Motte), ST222866 | | Glamorganshire | 1.5Prehistoric | GM511 |
| Cefn Manmoel cross-ridge dyke | Cross Ridge Dyke | Argoed, (also Cwm, Blaenau Gwent) | 51°44′39″N 3°12′06″W﻿ / ﻿51.7442°N 3.2018°W﻿ / 51.7442; -3.2018﻿ (Cefn Man Moel Cross-Ridge Dyke), SO171057 | Linear defensive earthwork which may be from neolithic or medieval period. This site crosses the border into Blaenau Gwent | Monmouthshire | 1.9Unknown | MM345 |
| Rectangular Earthworks 530m SSW of Heol-Ddu-Uchaf | Practice camp | Bargoed | 51°41′04″N 3°14′52″W﻿ / ﻿51.6845°N 3.2477°W﻿ / 51.6845; -3.2477﻿ (Rectangular Earthworks 530m SSW of Heol-Ddu-Uchaf), ST138991 | | Glamorganshire | 2Roman | GM164 |
| Fforest Gwladys Roman practice camp | Practice camp | Gelligaer | 51°41′02″N 3°15′28″W﻿ / ﻿51.6838°N 3.2579°W﻿ / 51.6838; -3.2579﻿ (Fforest Gwladys Roman practice camp), ST131990 | | Glamorganshire | 2Roman | GM273 |
| Gelligaer Roman Site | Fort | Gelligaer | 51°40′01″N 3°15′17″W﻿ / ﻿51.667°N 3.2548°W﻿ / 51.667; -3.2548﻿ (Gelligaer Roman Site), ST133972 | | Glamorganshire | 2Roman | GM016 |
| Fort South of Pen-Llwyn-Fawr | Fort | Pontllanfraith | 51°39′04″N 3°11′42″W﻿ / ﻿51.651°N 3.195°W﻿ / 51.651; -3.195﻿ (Fort South of Pen-Llwyn-Fawr), ST174953 | | Monmouthshire | 2Roman | MM096 |
| Cross Ridge Dyke & Cairn on Twyn Hywel | Cross Ridge Dyke | Aber Valley, (also Pontypridd) | 51°36′42″N 3°18′03″W﻿ / ﻿51.6116°N 3.3007°W﻿ / 51.6116; -3.3007﻿ (Cross Ridge Dyke & Cairn on Twyn Hywel), ST100911 | (The dyke crosses the border into Rhondda Cynon Taf) | Glamorganshire | 3Unknown | GM456 |
| Capel Gwladys | Chapel | Darran Valley | 51°41′08″N 3°16′02″W﻿ / ﻿51.6856°N 3.2671°W﻿ / 51.6856; -3.2671﻿ (Capel Gwladys), ST125992 | | Glamorganshire | 3Early Medieval | GM309 |
| Dyke 387m E of Clawdd Trawscae Farm | Ditch | Darran Valley | 51°41′40″N 3°16′41″W﻿ / ﻿51.6944°N 3.278°W﻿ / 51.6944; -3.278﻿ (Dyke 387m E of Clawdd Trawscae Farm), SO117002 | | Glamorganshire | 3Early Medieval | GM261 |
| Site of Tegernacus Stone | Inscribed stone | Darran Valley | 51°42′57″N 3°14′59″W﻿ / ﻿51.7157°N 3.2498°W﻿ / 51.7157; -3.2498﻿ (Site of Tegernacus Stone), SO137026 | | Glamorganshire | 3Early Medieval | GM339 |
| St. Sannan's Churchyard Cross, Bedwellty | Cross | Argoed | 51°41′42″N 3°12′27″W﻿ / ﻿51.6951°N 3.2074°W﻿ / 51.6951; -3.2074﻿ (St. Sannan's Churchayrd Cross, Bedwellty), SO166002 | | Monmouthshire | 4Medieval | MM310 |
| Bedwas Churchyard Cross | Cross | Bedwas, Trethomas and Machen | 51°35′43″N 3°11′53″W﻿ / ﻿51.5954°N 3.1981°W﻿ / 51.5954; -3.1981﻿ (Bedwas Churchyard Cross), ST171891 | | Monmouthshire | 4Medieval | MM143 |
| House Platforms to W of Mynydd Machen | House platform | Bedwas, Trethomas and Machen | 51°36′15″N 3°07′30″W﻿ / ﻿51.6043°N 3.1249°W﻿ / 51.6043; -3.1249﻿ (House Platforms to W of Mynydd Machen), ST221900 | | Monmouthshire | 4Medieval | MM337 |
| Caerphilly Castle | Castle | Caerphilly | 51°34′35″N 3°13′14″W﻿ / ﻿51.5763°N 3.2206°W﻿ / 51.5763; -3.2206﻿ (Caerphilly Castle), ST155870 | | Glamorganshire | 4Medieval | GM002 |
| Castell Morgraig | Castle | Caerphilly, (also Lisvane) | 51°33′07″N 3°12′47″W﻿ / ﻿51.5519°N 3.213°W﻿ / 51.5519; -3.213﻿ (Castell Morgraig), ST159843 | (Site is on the border with Cardiff) | Glamorganshire | 4Medieval | GM031 |
| Capel y Brithdir | Chapel | Darran Valley | 51°42′54″N 3°14′53″W﻿ / ﻿51.7149°N 3.2481°W﻿ / 51.7149; -3.2481﻿ (Capel y Brithdir), SO138025 | | Glamorganshire | 4Medieval | GM451 |
| Platform Houses on East Side of Gelligaer Common | Platform house | Darran Valley | 51°42′59″N 3°16′50″W﻿ / ﻿51.7164°N 3.2806°W﻿ / 51.7164; -3.2806﻿ (Platform Houses on East Side of Gelligaer Common), SO116027 | | Glamorganshire | 4Medieval | GM311 |
| Three Platform Houses on Cefn Brithdir | Platform house | Darran Valley | 51°43′09″N 3°15′44″W﻿ / ﻿51.7193°N 3.2623°W﻿ / 51.7193; -3.2623﻿ (Three Platform Houses on Cefn Brithdir), SO128030 | | Glamorganshire | 4Medieval | GM317 |
| Twyn Castell | Motte | Gelligaer | 51°39′53″N 3°14′59″W﻿ / ﻿51.6646°N 3.2496°W﻿ / 51.6646; -3.2496﻿ (Twyn Castell), ST136969 | | Glamorganshire | 4Medieval | GM121 |
| Twmbarlwm Mound and Bailey Castle | Motte | Risca | 51°37′38″N 3°05′46″W﻿ / ﻿51.6272°N 3.0961°W﻿ / 51.6272; -3.0961﻿ (Twm-Barlwm Mound and Bailey Castle), ST243926 | | Monmouthshire | 4Medieval | MM044 |
| Gwern-y-Domen Castle Mound | Motte | Van | 51°35′01″N 3°11′31″W﻿ / ﻿51.5837°N 3.192°W﻿ / 51.5837; -3.192﻿ (Gwern-y-Domen Castle Mound), ST175878 | | Glamorganshire | 4Medieval | GM218 |
| Twyn Tudor | Motte | Ynysddu | 51°38′14″N 3°10′01″W﻿ / ﻿51.6373°N 3.1669°W﻿ / 51.6373; -3.1669﻿ (Twyn Tudor), ST193938 | | Monmouthshire | 4Medieval | MM035 |
| Charcoal Blast Furnace at Abercarn | Blast Furnace | Abercarn | 51°38′50″N 3°08′03″W﻿ / ﻿51.6471°N 3.1342°W﻿ / 51.6471; -3.1342﻿ (Charcoal Blast Furnace at Abercarn), ST216948 | | Monmouthshire | 5Post-Medieval/Modern | MM250 |
| Cornish Type Engine House, Bryngwyn Colliery | Engine house | Bedwas, Trethomas and Machen | 51°35′46″N 3°12′40″W﻿ / ﻿51.5962°N 3.2111°W﻿ / 51.5962; -3.2111﻿ (Cornish Type Engine House, Bryngwyn Colliery), ST162892 | | Glamorganshire | 5Post-Medieval/Modern | GM440 |
| Machen Forge and Tinplate Works | Water Power System | Bedwas, Trethomas and Machen | 51°35′35″N 3°09′04″W﻿ / ﻿51.593°N 3.1511°W﻿ / 51.593; -3.1511﻿ (Machen Forge and Tinplate Works), ST203888 | | Glamorganshire | 5Post-Medieval/Modern | GM516 |
| Caerffili Mountain Shaft Mounds | Shaft Mounds | Caerphilly | 51°33′30″N 3°13′22″W﻿ / ﻿51.5583°N 3.2229°W﻿ / 51.5583; -3.2229﻿ (Caerffili Mountain Shaft Mounds), ST153850 | | Glamorganshire | 5Post-Medieval/Modern | GM454 |
| Former Dam of Cwmcarn Canal Reservoir | Dam | Crosskeys | 51°38′07″N 3°07′30″W﻿ / ﻿51.6353°N 3.1249°W﻿ / 51.6353; -3.1249﻿ (Former Dam of Cwmcarn Canal Reservoir), ST222935 | | Monmouthshire | 5Post-Medieval/Modern | MM259 |
| Pen-y-fan Pond | Reservoir | Crumlin | 51°41′52″N 3°09′51″W﻿ / ﻿51.6979°N 3.1641°W﻿ / 51.6979; -3.1641﻿ (Pen y Fan Canal Reservoir), SO196005 | Canal Reservoir | Monmouthshire | 5Post-Medieval/Modern | MM269 |
| Caerphilly Iron Furnace | Ironworks | Penyrheol, Trecenydd and Energlyn | 51°34′53″N 3°14′22″W﻿ / ﻿51.5815°N 3.2394°W﻿ / 51.5815; -3.2394﻿ (Caerphilly Iron Furnace), ST142876 | | Glamorganshire | 5Post-Medieval/Modern | GM503 |
| Rhymney Upper Furnace | Blast Furnace | Rhymney | 51°46′27″N 3°17′36″W﻿ / ﻿51.7741°N 3.2934°W﻿ / 51.7741; -3.2934﻿ (Rhymney Upper Furnace), SO108091 | | Glamorganshire | 5Post-Medieval/Modern | GM403 |
| Rudry Ironworks | Ironworks | Rudry | 51°35′14″N 3°09′44″W﻿ / ﻿51.5873°N 3.1622°W﻿ / 51.5873; -3.1622﻿ (Rudry Ironworks), ST195882 | | Glamorganshire | 5Post-Medieval/Modern | GM357 |
| Ruperra Castle | House (domestic) | Rudry | 51°34′13″N 3°07′38″W﻿ / ﻿51.5703°N 3.1271°W﻿ / 51.5703; -3.1271﻿ (Ruperra Castle), ST219863 | | Glamorganshire | 5Post-Medieval/Modern | GM379 |
| Ruperra Castle lower summerhouse remains | Garden building | Rudry | 51°34′22″N 3°07′20″W﻿ / ﻿51.5729°N 3.1221°W﻿ / 51.5729; -3.1221﻿ (Ruperra Castle lower summerhouse remains), ST223866 | | Glamorganshire | 5Post-Medieval/Modern | GM590 |
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