A report on the excavation of a medieval royal castle and hunting lodge in east Wiltshire which was constructed in the 12th-century, on top of a prehistoric hillfort, and was greatly expanded by Henry III in the mid 13th century. The excavation, focused on the royal quarters, uncovered large numbers of ceramic, glass and metal objects which testify to the opulence of the site. The excavation results are supplemented by a 1990s analysis and survey of the earthworks and layout of the castle and the site is compared to other royal palaces, especially nearby Clarendon. The volume includes detailed pottery, small finds and environmental reports and is richly illustrated throughout.