Caen Castle, built around 1060 by William the Conqueror on a limestone plateau overlooking the Orne valley, stands as one of Europe's largest medieval fortresses spanning 5.5 hectares. This Norman fortress served as a seat of ducal power where William's successors, including his son Henry I, hosted major assemblies and constructed significant structures such as Saint George's church and a substantial ducal hall. After its recapture by the French Crown in 1204 and damage during World War II, the castle now houses the Musée de Normandie and Musée des Beaux Arts, preserving its architectural heritage while serving as a major cultural institution celebrating Normandy's rich history.