Geneva is the second most populous city in Switzerland (after Zürich) and is the most populous city of Romandy, the French-speaking part of Switzerland. Surrounded by the Alps and Jura mountains, the city has views of dramatic Mont Blanc. Situated where the Rhône exits Lake Geneva, it is a global city, a financial center, and worldwide center for diplomacy due to the presence of numerous international organizations, including the headquarters of many of the agencies of the United Nations and the Red Cross. Geneva is the city that hosts the highest number of international organizations in the world. It is also the place where the Geneva Conventions were signed, which chiefly concern the treatment of wartime non-combatants and prisoners of war.