It finally became clear that the premises were no longer suitable for a permanent and functional display of the whole collection. The Committee of the Museum therefore suggested to the Municipality of La Chaux-de-Fonds that a foundation should be set up with the purpose of promoting the construction of a new building. Opened in 1974 under the name of Musée international d'horlogerie, this was characterized by a conception and techniques in the avant-garde of architecture and museography. Three decades later its construction is as fascinating as its exhibits.