Warwick Castle is a medieval castle in Warwick, England, founded by William the Conqueror in 1068. The original wooden motte-and-bailey castle was rebuilt in stone in the 12th century by the de Beaumont family, the castle’s constables who became the earls of Warwick. During the Hundred Years War, the facade opposite the town was refortified, resulting in one of the most recognisable examples of 14th-century military architecture.