Ancient Monuments

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Carmarthen Castle

A Scheduled Monument in Carmarthen (Caerfyrddin), Carmarthenshire (Sir Gaerfyrddin)

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Latitude: 51.8557 / 51°51'20"N

Longitude: -4.3059 / 4°18'21"W

OS Eastings: 241294

OS Northings: 219972

OS Grid: SN412199

Mapcode National: GBR DG.T8M2

Mapcode Global: VH3LH.BM08

Entry Name: Carmarthen Castle

Scheduled Date:

Source: Cadw

Source ID: 331

Cadw Legacy ID: CM008

Schedule Class: Defence

Category: Castle

Period: Medieval

County: Carmarthenshire (Sir Gaerfyrddin)

Community: Carmarthen (Caerfyrddin)

Built-Up Area: Carmarthen

Traditional County: Carmarthenshire


The monument consists of the remains of a castle, dating to the medieval period. It comprises the remains of a rubble masonry castle of mainly the 12thg to the 14th centuries and comprises a stone-revetted motte, twin-towered gatehouse, a south west corner tower and wall turret to the east of this with short sections of curtain wall, all to the west of the site. To motte walls have two small half-round turrets to the north and paired buttresses representing the site of a further turret to west the majority of this fabric is the result of 19th century reconstruction.

The castle originating at the beginning of the 12th century replaced an earlier fortification down river and quickly became important, passing into the hands of the Crown and becoming the administrative centre of south west Wales. Captured and destroyed by Llywelyn the Great in 1215 it was recaptured by William Marshall the younger, earl of Pembroke in 1223 and the first masonry castle may have been constructed at this date.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive practices. The monument is well-preserved and an important relic of the medieval landscape. It retains significant archaeological potential, with a strong probability of the presence of both structural evidence and intact associated deposits.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

Source: Cadw

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