The now-ruined Château Gaillard, built with unbelievable dispatch between 1196 and 1198, secured the western border of English territory until Henry IV ordered its destruction in 1603. The tourist office has details on tours (€4.50, in French with English-speaking guides), held at 4.30pm daily except Tuesday and at 11.30am on Sunday. Year-round entry to the château grounds is free.
