Canton of Geneva shares border with Vaud
The Canton of Geneva, officially the Republic and Canton of Geneva (French: République et canton de Genève; Arpitan: Rèpublica et canton de Geneva; German: Republik und Kanton Genf; Italian: Repubblica e Cantone di Ginevra; Romansh: Republica e chantun Genevra), is one of the 26 cantons forming the Swiss Confederation. It is composed of forty-five municipalities, and the seat of the government and parliament is in the City of Geneva.
Geneva is the French-speaking westernmost canton of Switzerland. It lies at the western end of Lake Geneva and on both sides of the Rhone, its main river. Within the country, the canton shares borders with Vaud to the east, the only adjacent canton. However, the borders of the canton are essentially international, with the French region of Auvergne-Rhône-Alpes. As is the case in several other Swiss cantons (Ticino, Neuchâtel, and Jura), Geneva is referred to as a republic within the Swiss Confederation.
One of the most populated cantons, Geneva is considered one of the most cosmopolitan regions of the country. As a center of the Calvinist Reformation, the city of Geneva has had a great influence on the canton, which essentially consists of the city and its suburbs. Notable institutions of international importance based in the canton are the University of Geneva, the United Nations, the International Committee of the Red Cross and CERN.Geography
Geneva is the flattest canton of Switzerland, with a height difference of only 184 metres between its lowest and highest point. However, it is surrounded across its borders by the numerous mountains of the Jura and Alpine foothills, notably the Crêt de la Neige and its neighbour Le Reculet (the highest, and second-highest peaks of the Jura, respectively), the Salève, the Voirons,  and La Dôle (in Vaud territory). The area of the canton of Geneva is 282 square kilometers (108.9 sq mi).
The canton of located in the extreme west of Switzerland. Excluding the exclave of the municipality of Céligny, the canton shares 95% of its border with France: 103 km out a total of 107.5 km, the remaining 4.5 km are shared with Vaud.
Geneva is surrounded by the French departments of the Ain to its west, and that of the Haute Savoie to the East and South, and the canton of Vaud to the north.
adjoins borders neighbors is adjacent to