A Swiss luxury watch and clock manufacturer, Vacheron Constantin SA is the second oldest Swiss manufacturer and one of the oldest watch manufacturers in the world with an uninterrupted watchmaking history since its foundation. The Vacheron Constantin headquarters building in Geneva was designed by Bernard Tschumi, and has been noted for its architectural significance. In 2007, Vacheron Constantin introduced the Métiers d'Art 'Les Masques' collection of timepieces featuring miniature reproductions of primitive art masks.