Llangynwyd Castle

In medieval times it was a prominent outpost in the Gorfynydd Cantref uplands of the lordship of Glamorgan, it is believed to have been annexed in around 1147, and it was mentioned in documents in 1246.

The castle was plundered in 1258 and underwent a reconstruction but it was burned down in around 1293-4 and likely never rebuilt.

[1] The Royal Commission on the Ancient and Historical Monuments of Wales describes the ruined castle as occupying the "tip of a steep sided spur between two streams" and consisting of a "heart shaped walled inner court some 35-39m across set at the south-east end of a larger outer court".

[1] The inner court is surrounded by a deep ditch, except on the northeastern side.

The curtain wall around it is in a poorly degraded state, and possibly predates 1257.