Built in Tudor Gothic style in 1830-1840 by Thomas Hopper for Christopher Rice Mansel Talbot, Margam Castle was built of Pyle ashlar stone and arranged around three courtyards, it has two main storeys with a gabled third storey. A dramatic octagonal tower with attached stair turret rises two storeys above the main house. The main entrance is a Gothic, two storey gabled porch. The house was extensively damaged by fire in 1977, restoration work has been undertaken and parts of the house are in use.