Château Gaillard ("Saucy Castle") is a ruined medieval castle, located 90 m above the commune of Les Andelys overlooking the River Seine, in the Eure département of historical Normandy, now Upper Normandy, France. It is located some 95 kilometres (59 mi) north-west of Paris and 40 kilometres (25 mi) from Rouen. Construction began in 1196 under the auspices of Richard the Lionheart, who was simultaneously King of England and feudal Duke of Normandy.