# Grade I listed buildings in Monmouthshire

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Monmouthshire is a county and principal area of Wales. It borders Torfaen and Newport to the west; Herefordshire and Gloucestershire to the east; and Powys to the north. The largest town is Abergavenny, with the other major towns being Chepstow, Monmouth, and Usk. The county is 850 km$^2$ (330 sq mi) in extent, with a population of 95,200 as of 2020. The present county was formed under the Local Government (Wales) Act 1994, which came into effect in 1996, and comprises some sixty percent of the historic county. Between 1974 and 1996, the county was known by the ancient title of Gwent, recalling the medieval Welsh kingdom. In his essay on local government in the fifth and final volume of the Gwent County History, Robert McCloy suggests that the governance of "no county in the United Kingdom in the twentieth century was so transformed as that of Monmouthshire".
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. Listing was begun by a provision in the Town and Country Planning Act 1947. Once a building is listed, strict limitations are imposed on the modifications allowed to its structure or fittings. In Wales, authority for listing under the Planning (Listed Buildings and Conservation Areas) Act 1990 lies with Cadw. Listed buildings are categorised into three grades:
   * Grade I – buildings of exceptional interest, only 2.5% of listed buildings in England and Wales are Grade I;
   * Grade II* – buildings of particular importance with more than special interest, 5.8% of listed buildings in England and Wales are Grade II*;
   * Grade II – buildings of special interest; 91.7% of all listed buildings in England and Wales are in this class.
There are 53 Grade I listed buildings in Monmouthshire. These consist of twenty-four churches, a priory and an abbey, eight castles, seven houses, two bridges, a barn, a cross, a farm, a folly, a gatehouse, a hotel, a municipal building, a stables, and two elements of town walls. The journalist Simon Jenkins notes the county's "fine collection" of castles, mostly dating from the Norman invasion of Wales, and describes Chepstow as "the glory of medieval south Wales". The castle at Raglan is later, dating from the mid-fifteenth century. The fortified bridge over the River Monnow at Monmouth is the only remaining fortified river bridge in the country with its gate tower standing on the bridge, and has been described as "arguably the finest surviving medieval bridge in Britain". Monmouthshire has a more "modest" range of churches, although that at Bettws Newydd has "perhaps the most complete rood arrangement remaining in any church in England and Wales". The county's Grade I listed abbey, at Tintern, became a focal point of the Wye Tour in the late-eighteenth century. The Monmouthshire writer and artist, Fred Hando, chronicled the history of the county in some 800 newspaper articles written between the 1920s and the 1960s and published in the South Wales Argus, focusing on "the little places of a shy county". Among the Grade I listed structures Hando described were "the tallest house in Monmouthshire" at Treowen, "the most crooked church in Britain" at Cwmyoy, and the Arts and Crafts sgraffito at Llanfair Kilgeddin.
Notable people associated with Monmouthshire's Grade I listed buildings include Henry V, born at Monmouth Castle in 1387; the medieval soldier and statesman William Marshal, 1st Earl of Pembroke, who undertook major construction at Chepstow Castle; and Henry Somerset, 1st Marquess of Worcester, who entertained his king at Raglan, and lost the castle at the end of the First English Civil War. William Wordsworth undertook the Wye Tour in 1798, composing Lines Written a Few Miles above Tintern Abbey during his visit, and Walter Savage Landor sought, unsuccessfully, to establish a landed estate at Llanthony Priory. Archdeacon Coxe's record of his journey to Llanthony in the spring of 1799 provides an illustration of the hazards of travelling in Wales at this time: "I would not recommend timid persons to pass this way in a carriage, for in the whole course of my travels, I seldom met with one more inconvenient and unsafe". In 1840, the Chartist leader John Frost and two colleagues were tried at the Shire Hall in Monmouth and sentenced to be hanged, drawn and quartered, the last such sentences to be passed in Britain. A statue in front of the Shire Hall commemorates Charles Stewart Rolls, the aviator and entrepreneur who was the first Briton to be killed in a plane crash.
The architecture of the county was first systematically covered by William Coxe in his two-volume, An Historical Tour in Monmouthshire, published in 1801. Coxe's Preface explains the Tour's genesis; "The present work owes its origin to an accidental excursion in Monmouthshire, in company with my friend Sir Richard Hoare, during the autumn of 1798. I was struck with the picturesque ruins of ancient castles, and I was animated with the view of mansions distinguished by the residence of illustrious persons". A detailed county history was undertaken by Sir Joseph Bradney, in his A History of Monmouthshire from the Coming of the Normans into Wales down to the Present Time; published in the early 20th century. More recent studies include those of the architectural historian John Newman, in his Gwent/Monmouthshire volume of the Pevsner Buildings of Wales series; and, most exhaustively, by Sir Cyril Fox and Lord Raglan, in their three-volume study, Monmouthshire Houses. The last was described by the architectural historian Peter Smith as "one of the most remarkable studies of vernacular architecture yet made in the British Isles, a landmark, in its own field, as significant as Darwin's Origin of Species".

## Buildings

| Name | Location | Date Listed | Grid Ref. Geo-coordinates | Function | Notes | Reference Number |
| Abbey Hotel | Llanthony | 9 January 1956 | SO2883227873 51°56′41″N 3°02′12″W﻿ / ﻿51.944808861401°N 3.0367936443754°W﻿ / 51.944808861401; -3.0367936443754﻿ (Abbey Hotel) | Commercial | Built into the west range of Llanthony Priory | 1940 |
| Abergavenny Castle | Abergavenny | 7 May 1952 | SO2994413962 51°49′12″N 3°01′04″W﻿ / ﻿51.819898203107°N 3.0177896854119°W﻿ / 51.819898203107; -3.0177896854119﻿ (Abergavenny Castle) | Castle | West of the main road on the southern approach to the town centre | 2376 |
| Court Farm Barn | Llanthony | 9 January 1956 | SO2870227868 51°56′41″N 3°02′19″W﻿ / ﻿51.944747235926°N 3.0386835615742°W﻿ / 51.944747235926; -3.0386835615742﻿ (Court Farm Barn) | Barn | On the west side of the Llanthony Priory precinct about 110m from the priory ruins | 1941 |
| Caldicot Castle | Caldicot | 6 October 1953 | ST4867988516 51°35′35″N 2°44′32″W﻿ / ﻿51.59316838225°N 2.7422545221732°W﻿ / 51.59316838225; -2.7422545221732﻿ (Caldicot Castle) | Castle | About 300m east of the Church of St Mary and about 700m east of Caldicot | 2006 |
| Castle House | Usk | 16 February 1953 | SO3775301088 51°42′18″N 2°54′08″W﻿ / ﻿51.705088232202°N 2.902201314861°W﻿ / 51.705088232202; -2.902201314861﻿ (Castle House) | House | On a hillside a little north east of Usk town centre and below the castle | 2128 |
| Chepstow Castle | Chepstow | 12 June 1950 | ST5333094113 51°38′38″N 2°40′33″W﻿ / ﻿51.64389456027°N 2.6758667834541°W﻿ / 51.64389456027; -2.6758667834541﻿ (Chepstow Castle) | Castle | In a commanding position on the west bank of the River Wye | 2475 |
| Church of St Aeddan | Bettws Newydd | 9 January 1956 | SO3622305874 51°44′53″N 2°55′31″W﻿ / ﻿51.747941854858°N 2.9252175906742°W﻿ / 51.747941854858; -2.9252175906742﻿ (Church of St Aeddan) | Church | At the south east end of the village, approached by lane running east, just to the north of Bettws Lodge | 1962 |
| Church of St Bridget | Skenfrith | 19 November 1953 | SO4560920340 51°52′44″N 2°47′30″W﻿ / ﻿51.878984899316°N 2.7915523126198°W﻿ / 51.878984899316; -2.7915523126198﻿ (Church of St Bridget) | Church | Towards the north end of Skenfrith village and approximately 100m north west of Skenfrith Castle | 2082 |
| Church of St Cadoc | Llangattock Lingoed | 9 January 1956 | SO3615220064 51°52′32″N 2°55′44″W﻿ / ﻿51.87549890715°N 2.9288655122272°W﻿ / 51.87549890715; -2.9288655122272﻿ (Church of St Cadoc) | Church | In a sloping churchyard, in the centre of Llangattock Lingoed | 1955 |
| Church of St David | Llangeview | 18 November 1980 | SO3968300694 51°42′06″N 2°52′27″W﻿ / ﻿51.701757384859°N 2.8742069225504°W﻿ / 51.701757384859; -2.8742069225504﻿ (Church of St David) | Church | In a rounded churchyard overlooking the A449 Usk exit, reached via lane running south from the B4235 just east of the bridge over the A449 | 2711 |
| Church of St David | Llanthony | 9 January 1956 | SO2884927820 51°56′40″N 3°02′12″W﻿ / ﻿51.94433°N 3.03653°W﻿ / 51.94433; -3.03653﻿ (Church of St David) | Church | 50m south of the priory buildings at Llanthony | 1938 |
| Church of St Jerome | Llangwm | 19 August 1955 | SO4329000557 51°42′03″N 2°49′19″W﻿ / ﻿51.700902675144°N 2.821996356783°W﻿ / 51.700902675144; -2.821996356783﻿ (Church of St Jerome) | Church | Some 500m east of Llangwm Isaf church, in an isolated site | 2028 |
| Church of St John | Llandenny | 27 November 1953 | SO4151203923 51°43′52″N 2°50′54″W﻿ / ﻿51.730980562993°N 2.8482871471469°W﻿ / 51.730980562993; -2.8482871471469﻿ (Church of St John) | Church | In the centre of the village of Llandenny, in an elevated position within an enclosed churchyard | 17425 |
| Church of St Martin | Cwmyoy | 9 January 1956 | SO2990523354 51°54′16″N 3°01′13″W﻿ / ﻿51.904322404237°N 3.0202641676575°W﻿ / 51.904322404237; -3.0202641676575﻿ (Church of St Martin) | Church | In the centre of Cwmyoy village on the east slope of the Vale of Ewyas | 1933 |
| Church of St Mary | Abergavenny | 7 May 1952 | SO3010114136 51°49′17″N 3°00′56″W﻿ / ﻿51.821482084132°N 3.0155474763321°W﻿ / 51.821482084132; -3.0155474763321﻿ (Church of St Mary) | Church | Key building in the group of historic buildings close to the main commercial centre of Abergavenny | 2373 |
| Church of St Mary | Caldicot | 19 August 1955 | ST4831688629 51°35′39″N 2°44′51″W﻿ / ﻿51.59415°N 2.74751°W﻿ / 51.59415; -2.74751﻿ (Church of St Mary) | Church | About 400m north east of the centre of Caldicot village | 2019 |
| Church of St Mary | Chepstow | 12 June 1950 | ST5359493973 51°38′34″N 2°40′19″W﻿ / ﻿51.642657781077°N 2.6720331822535°W﻿ / 51.642657781077; -2.6720331822535﻿ (Church of St Mary) | Church | At the end of the street within a churchyard crossed by a walkway to Lower Church Street | 2594 |
| Church of St Mary the Virgin | Llanfair Kilgeddin | 9 January 1956 | SO3558708684 51°46′23″N 2°56′06″W﻿ / ﻿51.773130426428°N 2.9349505372968°W﻿ / 51.773130426428; -2.9349505372968﻿ (Church of St Mary the Virgin) | Church | Close to the river Usk 1.5 km (0.93 mi) north east of Pant-y-goitre | 2782 |
| Church of St Mary | Magor | 1 March 1963 | ST4252986980 51°34′44″N 2°49′51″W﻿ / ﻿51.578763937612°N 2.8307725200588°W﻿ / 51.578763937612; -2.8307725200588﻿ (Church of St Mary) | Church | In the centre of the village and reached off Magor Square | 2928 |
| Church of St Mary | Portskewett | 19 August 1955 | ST4988888107 51°35′23″N 2°43′29″W﻿ / ﻿51.589600343769°N 2.7247447545583°W﻿ / 51.589600343769; -2.7247447545583﻿ (Church of St Mary) | Church | In the centre of Portskewett village at the junction of Main Road and Sudbrook Road | 2044 |
| Church of St Michael and All Angels | Gwernesney | 18 November 1980 | SO4148901805 51°42′43″N 2°50′54″W﻿ / ﻿51.711937074281°N 2.8482636256591°W﻿ / 51.711937074281; -2.8482636256591﻿ (Church of St Michael and All Angels) | Church | Some 2 km (1.2 mi) east north east of the Usk junction of the A449, just north of the B4235 | 2715 |
| Church of St Nicholas | Grosmont | 9 January 1956 | SO4047624300 51°54′51″N 2°52′00″W﻿ / ﻿51.914059071955°N 2.8667958972657°W﻿ / 51.914059071955; -2.8667958972657﻿ (Church of St Nicholas) | Church | In the centre of Grosmont in a large churchyard | 1947 |
| Church of St Nicholas | Trellech | 19 November 1953 | SO5004305486 51°44′45″N 2°43′30″W﻿ / ﻿51.745859624791°N 2.7249983592773°W﻿ / 51.745859624791; -2.7249983592773﻿ (Church of St Nicholas) | Church | Prominently sited in the centre of Trellech | 2106 |
| Church of St Peter, St Paul and St John | Llantrisant | 18 November 1980 | ST3912196924 51°40′04″N 2°52′54″W﻿ / ﻿51.667803883061°N 2.8816793569441°W﻿ / 51.667803883061; -2.8816793569441﻿ (Church of St Peter, St Paul and St John) | Church | In the centre of Llantrisant | 2718 |
| Church of St Teilo | Llantilio Crossenny | 19 November 1953 | SO3988814983 51°49′49″N 2°52′25″W﻿ / ﻿51.830237524744°N 2.8737181568702°W﻿ / 51.830237524744; -2.8737181568702﻿ (Church of St Teilo) | Church | In a churchyard in the centre of Llantilio Crossenny | 2073 |
| Church of St Teilo | Llantilio Pertholey | 9 January 1956 | SO3115216336 51°50′29″N 3°00′03″W﻿ / ﻿51.841389885889°N 3.0007398277434°W﻿ / 51.841389885889; -3.0007398277434﻿ (Church of St Teilo) | Church | Just off the old Hereford road about 3 km (1.9 mi) north of Abergavenny | 2002 |
| Church of St Tewdric | Mathern | 19 August 1955 | ST5231390881 51°36′53″N 2°41′24″W﻿ / ﻿51.61475139212°N 2.6901218736737°W﻿ / 51.61475139212; -2.6901218736737﻿ (Church of St Tewdric) | Church | In the centre of Mathern | 2040 |
| Church of St Tysoi | Llansoy | 19 August 1955 | SO4421902396 51°43′03″N 2°48′32″W﻿ / ﻿51.717529038817°N 2.8088501385971°W﻿ / 51.717529038817; -2.8088501385971﻿ (Church of St Tysoi) | Church | At the southern end of Llansoy about 250m south of the junction with the main road | 2029 |
| Clytha Castle | Llanarth | 9 January 1956 | SO3639008390 51°46′14″N 2°55′24″W﻿ / ﻿51.770579431288°N 2.923260277483°W﻿ / 51.770579431288; -2.923260277483﻿ (Clytha Castle) | Folly | On a hillside south of Clytha Park off the old A40 road some 300m east of the gates to the park | 1968 |
| Clytha Park | Llanarth | 9 January 1956 | SO3667109025 51°46′35″N 2°55′09″W﻿ / ﻿51.776319928071°N 2.9193045353085°W﻿ / 51.776319928071; -2.9193045353085﻿ (Clytha Park) | House | In a landscaped park north of the old A40 reached via a drive from the entrance opposite the junction with the road to Bettws Newydd | 1966 |
| Cross at Croes Lwyd | Raglan | 31 January 2001 | SO4005306992 51°45′30″N 2°52′12″W﻿ / ﻿51.758416527154°N 2.8699402141797°W﻿ / 51.758416527154; -2.8699402141797﻿ (Cross at Croes Lwyd) | Cross | On the southern side of Broom Lane about 400m east of Broom House, at the bottom of the garden at Whitecross Cottage | 24716 |
| Great Castle House | Monmouth | 15 August 1974 | SO5070912915 51°48′46″N 2°42′59″W﻿ / ﻿51.812707845338°N 2.7164100024564°W﻿ / 51.812707845338; -2.7164100024564﻿ (Great Castle House) | House | In the castle enclosure at the highest point of the town and just north of the town square | 2217 |
| Grosmont Castle | Grosmont | 9 January 1956 | SO4053224454 51°54′56″N 2°51′58″W﻿ / ﻿51.915449494561°N 2.8660084897158°W﻿ / 51.915449494561; -2.8660084897158﻿ (Grosmont Castle) | Castle | On a flat elevated plateau, some 100m north west of Grosmont village, approached along a narrow lane from the main street | 1949 |
| Llanthony Priory | Llanthony | 9 January 1956 | SO2885427872 51°56′41″N 3°02′11″W﻿ / ﻿51.944802691704°N 3.0364734290307°W﻿ / 51.944802691704; -3.0364734290307﻿ (Llanthony Priory) | Church | In Llanthony village in the Vale of Eywas | 1939 |
| Llanvihangel Court | Llanvihangel Crucorney | 6 May 1952 | SO3278120411 51°52′42″N 2°58′40″W﻿ / ﻿51.878221343415°N 2.9778927642542°W﻿ / 51.878221343415; -2.9778927642542﻿ (Llanvihangel Court) | House | In Llanvihangel Crucorney about 400m south east of the Church of St Michael | 1919 |
| Llanvihangel Court Stable Block | Llanvihangel Crucorney | 29 January 1998 | SO3279420362 51°52′40″N 2°58′40″W﻿ / ﻿51.877782425112°N 2.9776943871555°W﻿ / 51.877782425112; -2.9776943871555﻿ (Llanvihangel Court Stable Block) | Stables | About 30m south of Llanvihangel Court | 19288 |
| Llwyn-celyn Farmhouse | Llanvihangel Crucorney | 9 January 1956 | SO3095021807 51°53′26″N 3°00′17″W﻿ / ﻿51.890546478865°N 3.0047669592616°W﻿ / 51.890546478865; -3.0047669592616﻿ (Llwyn-celyn Farmhouse) | Farmhouse | On a knoll on the west side of Stanton about 1.5 km (0.93 mi) north west of Llanvihangel Crucorney | 1937 |
| Mathern Palace | Mathern | 6 October 1953 | ST5229090821 51°36′51″N 2°41′26″W﻿ / ﻿51.614210000776°N 2.6904458376599°W﻿ / 51.614210000776; -2.6904458376599﻿ (Mathern Palace) | House | In the centre of Mathern village about 50m south west of the Church of St Tewdric | 2007 |
| Monmouth Castle | Monmouth | 15 August 1974 | SO5067512872 51°48′44″N 2°43′01″W﻿ / ﻿51.812318256955°N 2.716897019083°W﻿ / 51.812318256955; -2.716897019083﻿ (Monmouth Castle) | Castle | On the east bank of the River Monnow at the highest point of the town and just north of the town square | 2216 |
| Monnow Bridge | Monmouth | 15 August 1974 | SO5046012508 51°48′32″N 2°43′12″W﻿ / ﻿51.809026739108°N 2.7199632928636°W﻿ / 51.809026739108; -2.7199632928636﻿ (Monnow Bridge) | Bridge | At the entrance to Monmouth's principal commercial street which leads up the hill to the town square from the south-west | 2218 |
| Pen-y-Clawdd Court | Llanvihangel Crucorney | 6 May 1952 | SO3103020099 51°52′31″N 3°00′12″W﻿ / ﻿51.875202368259°N 3.0032627120055°W﻿ / 51.875202368259; -3.0032627120055﻿ (Pen-y-Clawdd Court) | House | About 1500m south west of the Church of St Michael, Llanvihangel Crucorney approached by a lane from the small settlement round the old Llanvihangel station | 1926 |
| Penallt Old Church | Penallt | 19 November 1953 | SO5219810732 51°47′36″N 2°41′40″W﻿ / ﻿51.79321162371°N 2.6945109680669°W﻿ / 51.79321162371; -2.6945109680669﻿ (Penallt Old Church) | Church | In the very northernmost corner of Trellech Community about 1000m south of Monmouth, on the B4239 road at the junction by High Glanau | 2104 |
| Port Wall | Chepstow | 24 March 1975 | ST5325993947 51°38′33″N 2°40′37″W﻿ / ﻿51.642396207326°N 2.676870551066°W﻿ / 51.642396207326; -2.676870551066﻿ (Port Wall) | Walls, railings, gates | Extending from near Chepstow Castle, uphill to the town gate and crossing to the quarry above the station | 2477 |
| St Mary's Priory Church | Usk | 1 April 1974 | SO3789200811 51°42′09″N 2°54′01″W﻿ / ﻿51.702613430887°N 2.9001406321098°W﻿ / 51.702613430887; -2.9001406321098﻿ (St Mary's Priory Church) | Church | A town centre church, just south of the main thoroughfare with a large walled churchyard | 2123 |
| Priory Gatehouse | Usk | 16 February 1953 | SO3783600795 51°42′09″N 2°54′03″W﻿ / ﻿51.702463376228°N 2.9009480163587°W﻿ / 51.702463376228; -2.9009480163587﻿ (Priory Gatehouse) | Gatehouse | At right angles to the churchyard entrance, on a corner site, facing up Priory Street to Twyn Square | 2126 |
| Raglan Castle | Raglan | 19 November 1953 | SO4143308324 51°46′14″N 2°51′01″W﻿ / ﻿51.770537620941°N 2.8501736636801°W﻿ / 51.770537620941; -2.8501736636801﻿ (Raglan Castle) | Castle | Magnificently sited 0.25 km (0.16 mi) north of Raglan and reached by a private drive from the A40 | 2101 |
| Old Wye Bridge | Chepstow | 24 March 1975 | ST5361094359 51°38′46″N 2°40′19″W﻿ / ﻿51.646129480673°N 2.6718532886353°W﻿ / 51.646129480673; -2.6718532886353﻿ (Old Wye Bridge) | Bridge | Continuing the line of Bridge Street. Aligned almost due north–south, crossing a bend in the River Wye, here the boundary between Wales and England. The north part of the bridge is in England | 2479 |
| Shire Hall | Monmouth | 27 June 1952 | SO5078012837 51°48′43″N 2°42′55″W﻿ / ﻿51.812012876784°N 2.7153690759584°W﻿ / 51.812012876784; -2.7153690759584﻿ (Shire Hall) | Shire Hall | In the town square in the centre of Monmouth with a cobbled area to the front and sides spreading as far as the line of the road and including the statue of Charles Stewart Rolls, the co-founder of Rolls-Royce | 2228 |
| Tintern Abbey | Tintern | 29 September 2000 | SO5329100037 51°41′50″N 2°40′38″W﻿ / ﻿51.69715140172°N 2.6772244447268°W﻿ / 51.69715140172; -2.6772244447268﻿ (Tintern Abbey) | Church | In a prominent position on the right bank of the river Wye on the east side of the A466 | 24037 |
| Town Gate | Chepstow | 6 December 1950 | ST5327993793 51°38′28″N 2°40′36″W﻿ / ﻿51.641013320263°N 2.6765609328788°W﻿ / 51.641013320263; -2.6765609328788﻿ (Town Gate) | Walls, railings, gates | At the main entrance to the fortified town between Moor Street outside the gate to the west and the High Street to the east | 2476 |
| Treowen | Mitchel Troy | 1 May 1952 | SO4615311109 51°47′46″N 2°46′56″W﻿ / ﻿51.796050279369°N 2.7822105369036°W﻿ / 51.796050279369; -2.7822105369036﻿ (Treowen) | House | About 4.5 km (2.8 mi) west south west of Monmouth and 1 km (0.62 mi) north north east of Dingestow church, prominently situated amidst its own parkland just north of the road between Dingestow and Wonastow | 2065 |
| Usk Castle | Usk | 16 February 1953 | SO3767701089 51°42′18″N 2°54′12″W﻿ / ﻿51.705088767691°N 2.9033011675682°W﻿ / 51.705088767691; -2.9033011675682﻿ (Usk Castle) | Castle | On a spur on the hillside a short distance north east of the town | 2127 |
| White Castle | Llantilio Crossenny | 19 November 1953 | SO3795616754 51°50′45″N 2°54′07″W﻿ / ﻿51.845946783581°N 2.9020686900332°W﻿ / 51.845946783581; -2.9020686900332﻿ (White Castle) | Castle | Overlooking Llanvetherine, some 3 km (1.9 mi) north west of village of Llantilio Crossenny | 2079 |