Knepp Castle

The medieval Knepp Castle is to the west of the village of West Grinstead, West Sussex, England near the River Adur and the A24. The name is though to come from the Old English word "cnæp", referring to the mound on which it stands.

The castle was originally a motte and bailey fortress, built in the 12th century by William de Braose. It was rebuilt as a stone castle with a two-storey keep in 1214 by King John. In addition to John the castle had a succession of royal visitors, including Henry III in 1218, Edward II in 1324 and Richard II in 1384. Subsequently it fell into decline and deteriorated. The bulk of it had been destroyed by the 1720s. In the early 19th century the remnants were reinforced and fenced in by Sir Charles Burrell to protect them from further deterioration.

The castle stands on an oval mound, modelled from a natural feature, surrounded by a ditch and ramparts. The ditch, fed from a nearby pond, formed a moat which still contained water at the beginning of the eighteenth century.

The surviving remains of the castle consist of a single wall 11 metres high, 9.5 metres long, and 2.5 metres thick, with a doorway and another opening above it. This wall apparently formed the north end of the west wall of a tower or keep.

The name Knepp Castle is also applied to the castellated Gothick mansion built nearby in the early nineteenth century by Sir Charles Merrick Burrell, to the designs of John Nash.