# Grade I listed buildings in Carmarthenshire

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In the United Kingdom, the term listed building refers to a building or other structure officially designated as being of special architectural, historical, or cultural significance; Grade I structures are those considered to be "buildings of exceptional interest". Listing was begun by a provision in the Town and Country Planning Act 1947. Once listed, strict limitations are imposed on the modifications allowed to a building's structure or fittings. In Wales, the authority for listing under the Planning (Listed Buildings and Conservation Areas) Act 1990 rests with Cadw.

## Buildings

| Name | Location Grid Ref. Geo-coordinates | Date Listed | Function | Notes | Reference Number | Image |
| Church of St Margaret Marloes, Eglwyscummin | Eglwyscummin SN2309010649 51°45′59″N 4°33′55″W﻿ / ﻿51.766485359737°N 4.5651784716532°W﻿ / 51.766485359737; -4.5651784716532﻿ (Church of St Margaret Marloes, Eglwyscummin) | 30 November 1966 | Church | Situated in a prominent position on the N side of the B4314, some 2.5km SE of Rhos-goch. | 9389 | See more images |
| Llansteffan Castle | Llansteffan SN3514110148 51°45′56″N 4°23′26″W﻿ / ﻿51.765673538851°N 4.3904680276349°W﻿ / 51.765673538851; -4.3904680276349﻿ (Llansteffan Castle) | 30 November 1966 | Castle | Prominently situated on a rocky promontery, overlooking the mouth of the Tywi. | 9405 | See more images |
| St Peter's Church, Carmarthen | Carmarthen SN4152320221 51°51′29″N 4°18′10″W﻿ / ﻿51.858014060302°N 4.3026750809433°W﻿ / 51.858014060302; -4.3026750809433﻿ (St Peter's Church, Carmarthen) | 18 August 1954 | Church | Situated in rounded churchyard at end of King Street. | 9435 | See more images |
| Carmarthen Castle | Carmarthen SN4130820006 51°51′22″N 4°18′21″W﻿ / ﻿51.856021331313°N 4.3056956078448°W﻿ / 51.856021331313; -4.3056956078448﻿ (Carmarthen Castle) | 18 August 1954 | Castle | Situated behind buildings on E side of Nott's Square. | 9507 | See more images |
| Outer Gatehouse to Laugharne Castle | Laugharne Township SN3020210794 51°46′12″N 4°27′44″W﻿ / ﻿51.769996314861°N 4.4622874287369°W﻿ / 51.769996314861; -4.4622874287369﻿ (Outer Gatehouse to Laugharne Castle) | 25 September 1986 | Gatehouse | At the bottom of the street near the Town Hall, reached by path in front of Castle House. | 9652 | See more images |
| Laugharne Castle | Laugharne Township SN3021710752 51°46′11″N 4°27′43″W﻿ / ﻿51.769623603298°N 4.462049709389°W﻿ / 51.769623603298; -4.462049709389﻿ (Laugharne Castle) | 30 November 1966 | Castle | On an elevated coastal site near the Town Hall, reached by path in front of Castle House. | 9653 | See more images |
| Newcastle Emlyn Castle | Newcastle Emlyn SN3114240724 52°02′21″N 4°27′48″W﻿ / ﻿52.039128924761°N 4.4633503651072°W﻿ / 52.039128924761; -4.4633503651072﻿ (Newcastle Emlyn Castle) | 5 August 1991 | Castle | Sited on a peninsula to W of the town. Pedestrian access from Castle Street. | 9716 | See more images |
| Church of St Michael, Cilycwm | Cilycwm SN7533340029 52°02′41″N 3°49′09″W﻿ / ﻿52.044611649089°N 3.8192098171757°W﻿ / 52.044611649089; -3.8192098171757﻿ (Church of St Michael, Cilycwm) | 8 July 1966 | Church | Situated on E side of village street, in centre of village. | 10906 | See more images |
| Plas Taliaris | Manordeilo and Salem SN6400427984 51°56′01″N 3°58′46″W﻿ / ﻿51.93371443426°N 3.9795174176033°W﻿ / 51.93371443426; -3.9795174176033﻿ (Plas Taliaris) | 8 July 1966 | Hall | Situated 2km NE of Salem. | 10911 | See more images |
| Dryslwyn Castle | Llangathen SN5540320365 51°51′47″N 4°06′05″W﻿ / ﻿51.863086444876°N 4.1013355233841°W﻿ / 51.863086444876; -4.1013355233841﻿ (Dryslwyn Castle) | 8 July 1966 | Castle | On high ground overlooking the Tywi Valley, to the E of the B4297 and on the N side of the river. | 10934 | See more images |
| Church of St Michael, Myddfai | Myddfai SN7723830139 51°57′22″N 3°47′16″W﻿ / ﻿51.956163311575°N 3.7879016017424°W﻿ / 51.956163311575; -3.7879016017424﻿ (Church of St Michael, Myddfai) | 8 July 1966 | Church | Situated in rounded churchyard in centre of the village. | 10957 | See more images |
| Dolauhirion Bridge | Llandovery SN7619736098 52°00′34″N 3°48′19″W﻿ / ﻿52.009481070973°N 3.8051949579892°W﻿ / 52.009481070973; -3.8051949579892﻿ (Dolauhirion Bridge) | 8 March 1966 | Bridge | Situated some 1.5km north of Llandovery, carrying road to Cilycwm and Porthrhyd across River Tywi. | 10964 | See more images |
| Church of St Mary, Llandovery | Llandovery SN7698335161 52°00′04″N 3°47′36″W﻿ / ﻿52.001236071187°N 3.7934124878727°W﻿ / 52.001236071187; -3.7934124878727﻿ (Church of St Mary, Llandovery) | 8 March 1966 | Church | Situated on small hill above the modern A483 in large churchyard. | 10967 | See more images |
| Dinefwr Castle | Llandeilo SN6114921730 51°52′37″N 4°01′07″W﻿ / ﻿51.876814284337°N 4.0184949735057°W﻿ / 51.876814284337; -4.0184949735057﻿ (Dinefwr Castle) | 8 July 1966 | Castle | Situated on a rocky, wooded ridge above Afon Tywi. | 11117 | See more images |
| Kidwelly Castle | Kidwelly SN4089707049 51°44′22″N 4°18′21″W﻿ / ﻿51.739502562072°N 4.305709926741°W﻿ / 51.739502562072; -4.305709926741﻿ (Kidwelly Castle) | 12 May 1963 | Castle | Situated on a bluff above W bank of Gwendraeth Fach, across river from modern town centre. | 11876 | See more images |
| Church of Saint Mary, Kidwelly | Kidwelly SN4084206750 51°44′12″N 4°18′23″W﻿ / ﻿51.736800754749°N 4.3063689606529°W﻿ / 51.736800754749; -4.3063689606529﻿ (Church of Saint Mary, Kidwelly) | 12 May 1963 | Church | Situated in centre of Kidwelly in large walled churchyard. | 11878 | See more images |
| Llanelly House (2 Bridge Street) | Llanelli SN5067300503 51°41′00″N 4°09′41″W﻿ / ﻿51.683385690127°N 4.1614288066676°W﻿ / 51.683385690127; -4.1614288066676﻿ (Llanelly House (2 Bridge Street)) | 17 June 1966 | House | Situated on corner of Vaughan Street and Bridge Street, facing Parish Church. | 11892 | See more images |
| Llanelly House (4 Bridge Street) | Llanelli SN5068000503 51°41′00″N 4°09′41″W﻿ / ﻿51.683387556025°N 4.1613276288578°W﻿ / 51.683387556025; -4.1613276288578﻿ (Llanelly House (4 Bridge Street)) | 17 June 1966 | House | Situated on corner of Vaughan Street and Bridge Street, facing Parish Church. | 11893 | See more images |
| Llanelly House, rear wing (20 Vaughan Street) | Llanelli SN5066900489 51°41′00″N 4°09′41″W﻿ / ﻿51.683258837302°N 4.1614806295338°W﻿ / 51.683258837302; -4.1614806295338﻿ (Llanelly House, rear wing (20 Vaughan Street)) | 17 June 1966 | House | Situated on corner of Vaughan Street and Bridge Street, facing Parish Church. | 11894 | |
| Llanelly House, rear wing (22 Vaughan Street) | Llanelli SN5066800496 51°41′00″N 4°09′41″W﻿ / ﻿51.683321464011°N 4.1614980799895°W﻿ / 51.683321464011; -4.1614980799895﻿ (Llanelly House, rear wing (22 Vaughan Street)) | 17 June 1966 | House | Situated on corner of Vaughan Street and Bridge Street, facing Parish Church. | 11895 | Upload Photo |
| Llanelly House (24 Vaughan Street) | Llanelli SN5066700502 51°41′00″N 4°09′41″W﻿ / ﻿51.683375105962°N 4.1615151024159°W﻿ / 51.683375105962; -4.1615151024159﻿ (Llanelly House (24 Vaughan Street)) | 17 June 1966 | House | Situated on corner of Vaughan Street and Bridge Street, facing Parish Church. | 11896 | Upload Photo |
| Dolauhirion Bridge | Cilycwm SN7620636100 52°00′34″N 3°48′18″W﻿ / ﻿52.00950105493°N 3.8050646240583°W﻿ / 52.00950105493; -3.8050646240583﻿ (Dolauhirion Bridge) | 8 March 1966 | Bridge | Situated some 1.5km north of Llandovery, carrying road to Cilycwm and Porthrhyd across River Tywi. | 16996 | See more images |
| Carreg Cennen Castle | Dyffryn Cennen SN6681419093 51°51′16″N 3°56′07″W﻿ / ﻿51.854503676338°N 3.9352338825242°W﻿ / 51.854503676338; -3.9352338825242﻿ (Carreg Cennen Castle) | 24 November 1998 | Castle | Spectacularly set on a crag over the upper Cennen valley, approached from Carreg Cennen Farm, about 1.5 km E of Trap. | 20923 | See more images |