The canton of Vaud, is one of the 26 cantons forming the Swiss Confederation, in the French-speaking western part of the country. Capital city is Lausanne, also The largest city of the canton, located on Lac Léman (Lake Geneva). The southern or central part, north of Lausanne is mostly low hill country with glacial remains, this is the area where Agasiz discovered the ice ages. The northern part belongs to the Swiss part of the Jura. The south-east is mountainous, a part of the Pre-Alps, commonly named the Alpes Vaudoises (Vaud Alps). The Jura section contains numerous gorges, caves and other karst features like springs and loosing streams, and as it is the border to France there are numerous fortifications, some of which were recently opened to the public.