Lake Annecy
 Lake Annecy (French Lac d'Annecy) is a perialpine lake in Haute-Savoie in France .It is the third largest lake in France after the Lac du Bourget and Lac de Grand-Lieu if the French part of Lake Geneva (which is also partly in Switzerland) is excluded. It is known as Europe's cleanest lake because of strict environmental regulations introduced in the 1960s.