377 listed buildings, 4 of them Grade I

Monmouth CastleGrade I listedThe Shire HallGrade I listedMonnow MillGrade II listedThe Britannia Inn (PH)Grade II listedPriory House Conservative ClubGrade II listed+36See all photos

Photos from Wikimedia Commons and Geograph, copied to our own server, each credited to its photographer with its licence; names open the building’s page or its official list entry.

c. 1801

c. 1890

c. 1890

c. 1890

1905

1909

c. 1910

1930

1930

Public domain, from Wikimedia Commons, copied to our own server. Each credit opens the image’s page with its full description and history.

Cadw lists buildings of special architectural or historic interest in three grades: Grade I for buildings of exceptional interest, Grade II* for particularly important buildings of more than special interest, and Grade II for buildings of special interest. Listing protects the whole building, inside and out.

Every entry on Cadw’s register of listed buildings whose point lies inside the ONS 2022 built-up-area boundary. One list entry can cover a terrace or a group of buildings. Neighbourhood dots: the population-weighted centre of each Census 2021 output area, coloured by its neighbourhood’s (LSOA’s) share of homes built before 1919 (Valuation Office Agency, March 2025).

Monnow Street43 listed · 1 II*

Church Street23 listed · 3 II*

Drybridge Street19 listed

St. Mary's Street19 listed

Monkswell Road13 listed

St. James' Street13 listed

Agincourt Square12 listed

Glendower Street12 listed

Monk Street12 listed · 1 II*

Hereford Road11 listed

Priory Street11 listed · 6 II*

Drybridge Terrace10 listed

Of the 377 entries, 237 are named by a street address; the rest are named buildings such as churches, halls and bridges.

Search the rest on Cadw’s records →

Cadw’s conservation areas via DataMapWales. Hectares are the part of each area inside the built-up area.

The first 61 entries were listed in 1952, 1 of the 4 Grade I buildings among them. 142 came in 1974. Only 1 has been added in the last 15 years.

4 scheduled monuments

Nationally important archaeological sites and monuments, protected by law; work on them needs consent from the Welsh Government (Cadw).

Clawdd DuMedieval; Town Defences

May Hill PillboxesModern; Pillbox

Monmouth CastleMedieval; Castle

Monnow BridgeMedieval; Bridge

4 registered parks and gardens

Chapel House, MonmouthGrade II · Formal walled terraced town garden

ChippenhamGrade II · Medieval common; early twentieth-century public park

Monmouth, St. John'sGrade II · Formal small walled town garden

Nelson GardenGrade II · Small, informally laid out Georgian town garden with fine and unusual garden pavilion

Two measures, each ranked against every UK town of 1,000 or more, with protected heritage counting twice as much as the age of homes. Protected heritage counts each listed building by its grade (Grade I three points, II* two, II one), each scheduled monument and battlefield two, and each registered park or garden by its grade; it is ranked both per 10,000 residents and as a total, so a village with one fine church doesn’t outrank a historic city. The second measure is the share of homes built before 1919, from the Valuation Office Agency’s council tax records. History is a character grade: it describes the town and isn’t part of the overall grade.

Geoffrey of Monmouth

John of Monmouth

Thomas of Monmouth

Henry V of England

Philip Evans

Thomas Crofts

Henry Foxall

Charles Peart

Thomas Powell

Thomas Tudor

George Vaughan Maddox

George Lawrence Davis

Joseph Davis

Charles James Jackson

Reginald Brooks-King

S.G. Courteen

Richard Bagnall-Oakeley

Philip Nicholas

Gordon Lang

120013501500165018001950

Henry V of England1386–1422 · King of England from 1413 to 1422

Geoffrey of Monmouth1100–1155 · Historian and Bishop of St Asaph, Wales (c.1095–1155)

Reginald Brooks-King1861–1938 · British archer (1861-1938)

Philip Evans1645–1679 · Welsh Jesuit missionary to England and Wales, Roman Catholic martyr

RB

Richard Bagnall-Oakeley1865–1947 · British archer (1865–1947)

TM

Thomas of Monmouth1200–1172 · Medieval Welsh writer

GM

George Vaughan Maddox1802–1864 · Nineteenth-century British architect and builder

GL

Gordon Lang1893–1981 · British politician (1893-1981)

Everyone born in Monmouth → Birthplaces from Wikidata; portraits from Wikimedia Commons.

For its size, Monmouth has more listed heritage than 97% of UK towns. All told, the list holds 377 listed buildings, 4 of them Grade I, including Monmouth Castle. Its Grade I buildings cluster together: 3 of them stand within 400 m of Great Castle House. Only 26 of the 669 towns nearest its size have more Grade I buildings.

Monnow Street alone has 43 listed buildings. A conservation area has protected part of it since 1970. Most entries on the list, 70%, are houses, terraces and villas. The rest is about typical: it also has 4 scheduled monuments; and 17% of its homes were built before 1919, close to the 15% in the typical UK town.