Geneva 15.7%. Of the agricultural land, 0.3% is used for growing crops. Of the water in the municipality, 0.2% is composed of lakes and 2.9% is rivers and streams. The altitude of Geneva is , and corresponds to the altitude of the largest of the Pierres du Niton, two large rocks emerging from the lake which date from the last ice age. This rock was chosen by General Guillaume Henri Dufour as the reference point for surveying in Switzerland. The second main river of Geneva is the Arve, which flows into the Rhône just west of the city centre. Mont Blanc
Geneva a population of 1.26 million. This area is essentially spread east from Geneva towards the Riviera area (Vevey, Montreux) and north-east towards Yverdon-les-Bains, in the neighbouring canton of Vaud. Geneva is a global city, a financial centre, and a worldwide centre for diplomacy due to the presence of numerous international organizations, including the headquarters of many agencies of the United Nations and the Red Cross. Geneva hosts the highest number of international organizations in the world. It is also where the Geneva Conventions were signed, which chiefly concern the treatment of wartime non-combatants and prisoners of war. In 2017, Geneva