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
Geneva with other cities. It declares itself related to the entire world. Geneva has a population () of . The city of Geneva is at the centre of the Geneva metropolitan area, known as "Grand Genève" in French (Greater Geneva). Greater Geneva includes the Canton of Geneva in its entirety as well as the District of Nyon in the Canton of Vaud and several areas in the neighbouring French departments of Haute-Savoie and Ain. In 2011, the "agglomération franco-valdo-genevoise" had 915,000 inhabitants, two-thirds of whom lived on Swiss soil and one-third on French soil. The Geneva metropolitan area is experiencing steady