Les Andelys is a commune on the river Seine in the Upper Normandy region of northern France, some 30 km northeast of Évreux. As the name might suggest, Les Andelys is divided into its two original components: Grand-Andely and Petit-Andely. Les Andelys is best known for the ruins of Château Gaillard situated on a hill above the town from where beautiful views of the river Seine and the surrounding countryside can be enjoyed.