Geneva Geneva centres supported by the Swiss Confederation: the International Centre for Humanitarian Demining, the Centre for the Democratic Control of Armed Forces and the Geneva Centre for Security Policy, as well as other organisations active in the field of peace, international affairs and sustainable development. Organizations on the European level include the European Broadcasting Union (EBU) and CERN (the European Organization for Nuclear Research) which is the world's largest particle physics laboratory. The Geneva Environment Network (GEN) publishes the Geneva Green Guide, an extensive listing of Geneva-based global organisations working on environment protection and sustainable development. A website, jointly run
Geneva such as Caterpillar, DuPont, and Cargill have their international headquarters in the city; Take Two Interactive, Electronic Arts, INVISTA, Procter & Gamble and Oracle Corporation have their European headquarters in the city. Hewlett Packard has its Europe, Africa, and Middle East headquarters in Meyrin, near Geneva, as does PrivatAir. There is a long tradition of watchmaking in the city, which dates back to the 16th century. Many watchmakers have been based in Geneva since their foundation, such as (Baume et Mercier, Charriol, Chopard, Franck Muller, Patek Philippe, Rolex, Universal Genève, Raymond Weil, Vacheron Constantin and Frédérique Constant). Two major international