Lake Annecy 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 shared between Switzerland and France) is excluded. It is known as "Europe's cleanest lake" because of strict environmental regulations introduced in the 1960s. It is a popular tourist destination known for its swimming and water sports. The lake was formed about 18,000 years ago, at the time the large alpine glaciers melted. It is fed by many small rivers
Lake Geneva are for the most part rugged and sombre, while those of the northern shore fall in gentle vine-covered slopes, thickly set with villages and castles. The snowy peaks of the Mont Blanc are shut out from the western end of the lake by the Voirons mountain, and from its eastern end by the bolder summits of the Grammont, Cornettes de Bise and Dent d'Oche, but are seen from Geneva, and between Nyon and Morges. From Vevey to Bex, where the lake originally extended, the shores are enclosed by comparatively high and bold mountains, and the vista terminates in the grand