Pickering Castle stands as a classic 12th-century motte-and-bailey fortress at the edge of the North Yorkshire Moors, originally constructed by the Conqueror during the Norman settlement of northern England. The castle's wooden palisades were later replaced with impressive stone walls and keep during the 13th century, serving successive medieval kings as a hunting lodge and royal retreat. It briefly held King Richard II as a prisoner in 1399 before gradually declining in military importance under the Tudors. Today, English Heritage maintains this atmospheric ruin, where visitors can explore the well-preserved earthworks and stonework that speak to its centuries as one of England's premier royal castles.