Lake Geneva is divided into three parts because of its different forms of formation (sedimentation, tectonic folding, glacial erosion): According to the Swiss Federal Office of Topography, swisstopo, "Lac de Genève" designates that part of the "Petit Lac", which lies within the cantonal borders of Geneva (excluding the cantonal exclave Céligny), so about from Versoix–Hermance to the Rhône outflow in Geneva. The Chablais Alps border is its southern shore, the western Bernese Alps lie over its eastern side. The high summits of Grand Combin and Mont Blanc are visible from some places. Compagnie Générale de Navigation sur le lac Léman (CGN) operates
The Riviera (Lake Geneva, Wisconsin) of transportation around Geneva Lake. Starting in 1912, the United States Postal Service began summertime mail delivery from this point. By the 1930s, residents felt the need for a new recreational facility at this location. Despite the ongoing Great Depression, residents approved an $85,000 bond issue to raise funds for construction. A small island was created by building a rubble mound and allowing sediment to build up. To improve the stability of the structure, 280 piles were driven into the bedrock below. The first pile was put in place on March 29, 1932, and the entire building was completed in