The Château de Montlhéry is a historic castle located in the town of Montlhéry, France. Built in the 10th century, it served as a strategic fortification during the medieval period. The castle features impressive stone walls and towers, reflecting the architectural style of its time. Over the centuries, the château has undergone various modifications and restorations. It played a significant role in local history, particularly during conflicts such as the Hundred Years' War. Today, the site is a popular destination for visitors interested in medieval history and architecture.