Margam Castle is a formidable 19th Century Gothic Mansion designed by the architect Thomas Hopper for Christopher Rice Mansel Talbot. The house was built in 1830-1840 at a cost of £50,000 using sandstone from nearby Pyle quarry.
The mansion is Grade I Listed and of exceptional quality. Until 1942 the Castle and estate remained in the ownership of the Talbot family when it was acquired by a local landowner and in 1974 by the County Council, the present owners when it was of ruinous state. A disastrous fire in 1977 gutted the interior and it is currently being renovated