Ancient Monuments

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Castlemartin Castle

A Scheduled Monument in Stackpole and Castlemartin (Stackpole a Chastellmartin), Pembrokeshire (Sir Benfro)

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Latitude: 51.6458 / 51°38'44"N

Longitude: -5.0148 / 5°0'53"W

OS Eastings: 191513

OS Northings: 198419

OS Grid: SR915984

Mapcode National: GBR G6.JC4Z

Mapcode Global: VH1S5.1W6P

Entry Name: Castlemartin Castle

Scheduled Date:

Source: Cadw

Source ID: 2041

Cadw Legacy ID: PE166

Schedule Class: Monument

Category: Enclosure

Period: Prehistoric

County: Pembrokeshire (Sir Benfro)

Community: Stackpole and Castlemartin (Stackpole a Chastellmartin)

Traditional County: Pembrokeshire


The monument comprises the remains of a medieval ringwork, a defensive enclosure with surrounding outer bailey. The ringwork itself originally measured about 80m in diameter - and the outer bailey about 140m in diameter. Buildings and garden enclosures have encroached upon the outer terrace on the SW and NE sides, but the remaining elements of the site are both well-preserved and well-managed.

The monument is of national importance for its potential to enhance our knowledge of medieval defensive organisation. The monument forms an important element within the wider medieval context and the structure itself may be expected to contain archaeological information in regard to chronology, building techniques and functional detail.

The area scheduled comprises the remains described and an area around them within which related evidence may be expected to survive. It is irregular and measures up to 150m from NW to SE by up to 120m transversely.

Source: Cadw

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