La Chaux-de-Fonds is sometimes called “Watch City” because it is home to so much watchmaking history. It is said that “Chaux-de-Fonnier” factories produced half of the world’s watches in the first half of the 20th century! It’s no surprise that some historic sites are forgotten, but the Palais Invar deserves a closer look: It was one of the most recognizable buildings in La Chaux-de-Fonds for most of the 20th century, housing brands like Montre-Invar, Alpha, Venus, Le Phare, Sultana, and Jean d’Eve, and it was home to the first Salon Suisse de l’Horlogerie in 1933.