Lewes Castle is an imposing Norman fortress founded by William de Warenne shortly after the Norman Conquest of 1066, commanding a strategic position at the heart of historic Lewes in East Sussex. The castle features an unusual design with two mottes within its oval bailey and is distinguished by a striking 14th-century barbican with octagonal corner towers. Visitors can climb to the top of the Norman keep for panoramic views across Sussex, and explore the adjacent Barbican House Museum of Sussex Archaeology, which displays artifacts spanning from prehistoric flints and Roman pottery to Saxon weaponry, telling the story of the castle and region through millennia.