Caen is the capital of northern France's Lower Normandy region. Its city center features the Château de Caen, a circa-1060 castle built by William the Conqueror. It stands on a hill flanked by the Romanesque abbeys of Saint-Étienne and Sainte-Trinité, which date from the same period. The multimedia museum Le Mémorial is devoted to WWII and the Battle of Normandy.