Dourdan is a commune in the Essonne department in Île-de-France in northern France.  It is located in the metropolitan area of Paris. Dourdan is located on the river Orge in the western Essonne. The town is surrounded by the Dourdan’s forest (Forêt de Dourdan). Inhabitants of Dourdan are known as Dourdannais. The origin of the name comes credibly from "Dour" derived of the Celtic root "Dor" which means "water" or "river", the same origin as for the English city of Dover. The radical "dan" could have meant "hill"[citation needed]. Dourdan (Dordincum) developed during the Gallo-Roman period as an important center of production of ceramics. In the Middle Ages, it became the residence of Hugh the Great, father of Hugh Capet; he died there in 956. Dourdan became a royal city in 987, when Hugh Capet was crowned king. In 1220, King Philip II Augustus of France built a new castle; its most famous owners were: Blanche de Castille, Louis d'Évreux, Jean, duc de Berry, François de Lorraine, duc de Guise, Maximilien de Béthune, duc de Sully, Anne of Austria and the House of Orléans. Main Sights: Construction of the church began in 1150 and was completed by the end of the 12th century. In 1428, during the Hundred Years' War, its upper part was badly damaged by the troops of the Earl of Salisbury, and it was not restored before the end of the 15th century. It was again damaged by the Huguenots during the Wars of Religion (1562–1598). In 1641, the asymmetric spires were constructed and, in 1689, the chapel dedicated to the Virgin Mary (chapelle de la Vierge) was built, increasing the length of the building from 36 to 50 metres. During the French Revolution of 1789, the church was again damaged. It was turned into a Temple of Reason (Temple de la Raison victorieuse), and also a prison until 1795.