Château de Dourdan is a medieval fortress and museum in the Île-de-France region, designated as a Musée de France and classified as a historic monument. The site features the original fortress keep, museum galleries, and extensive collections of artwork and historical artifacts. Visitors enjoy guided castle tours, educational programs, family workshops, and seasonal summer events including nocturnal visits and lyric performances. The museum actively undertakes restoration and expansion projects while maintaining its role as both a cultural institution and tourist destination.