International Museum of Horology

The Musée International d'Horlogerie, abbreviated MIH and commonly known as the International Museum of Horology or International Watchmaking Museum, is a horological museum in La Chaux-de-Fonds, Switzerland. Owned and operated by the city of La Chaux-de-Fonds, it is dedicated to the study of time and time-measuring instruments. The museum holds collections of clocks and watches, marine and deck chronometers, automata, and related archives and documentation. It is considered one of the most important horological museums in the world, situated in a city historically regarded as one of the most significant centers of Swiss and global watchmaking industry.

The museum's origins trace to 1865, when the Watchmaking School of La Chaux-de-Fonds assembled a collection of old clocks primarily for didactic purposes. For 35 years, these pieces were displayed solely for students and teachers. Maurice Picard, a Jewish French watch-making industrialist, gave impetus to creating a public museum, and on March 24, 1902, the town authorities signed the foundation deed of the Watchmaking Museum, originally located in the same building as the school. The collection grew and the museum was enlarged three times, in 1907, 1952, and 1967.

In the early 1960s, a study commissioned by the City of La Chaux-de-Fonds and conducted by Georges-Henri Rivière, then director of the International Council of Museums (ICOM), highlighted both the importance of the collections and the need for a new building. In 1967, the City created the Fondation Maurice Favre to support fundraising, and in 1968 the name Musée International d'Horlogerie was adopted. The new building opened in 1974 under this name, characterized by avant-garde architectural and museographical concepts.

In the regional context, watchmaking and art-mechanics know-how was inscribed in 2020 on UNESCO's Representative List of the Intangible Cultural Heritage of Humanity (France and Switzerland). Both Le Locle and La Chaux-de-Fonds have been recognized as a UNESCO World Heritage Site for their horological and related cultural past. The museum celebrated its 50th anniversary on October 19 and 20, 2024, with dance and theater performances in the museum park. The MIH will be closed from November 3, 2025, until spring 2026 for the installation of an elevator for mobility-impaired persons and renovations.

The collections encompass large and medium-sized clocks, mechanical and electronic watches, marine and deck chronometers, non-mechanical time-measuring instruments, automata, and painted works. The collection comprises approximately 10,000 objects, including tools, machines, and industrial objects representative of regional watchmaking heritage. In parallel, the museum develops archives and historical documentation related to time in order to illuminate not only the technical history but also the artistic, social, and economic history of watchmaking.

Part of the holdings is displayed permanently. Switzerland Tourism mentions an ensemble of more than 4,500 pieces on display, including around 2,700 watches and 700 clocks. The museum also houses a restoration center for antique clocks (Centre de restauration en horlogerie ancienne), which carries out conservation and restoration work on museum collections and occasionally for private individuals, and a research center, "Der Mensch und die Zeit" (Centre d'études L'Homme et le Temps), which preserves documentary and archival holdings related to time measurement and watchmaking and makes them available to researchers and library users.

Among the major pieces in the permanent display are an organ clock by Pierre Jaquet-Droz, one of the first marine chronometers by Ferdinand Berthoud, and several works by Abraham Louis Breguet. The collection also provides an overview of the history of the Neuchâtel pendulum clock. French contributions are represented by Comtoise clocks and further examples from the workshop of French masters such as Antide Janvier. A replica of Giovanni Dondi's Astrarium, one of the earliest examples of an astronomical clock, is also exhibited. While the majority of pieces were manufactured in Switzerland, the collections span international horological traditions.

Built between 1972 and 1974, the museum building was designed by Zurich architect Pierre Zoelly and La Chaux-de-Fonds architect Georges-J. Haefeli. It occupies an underground volume of 20,000 cubic meters, excavated into the slope of a park. The concrete structure follows the site's gradient and is arranged over three main subterranean levels corresponding to the principal museum zones: a hall for temporary exhibitions and assemblies; galleries dedicated to earlier periods; and areas devoted to manufacturing and decorative techniques as well as twentieth-century pieces.

Open surfaces overlooking one another create a subtly articulated space shaped by changes in level and lighting, reinforced by natural light. The museum opens to the outside through large glazed areas at the entrance, the astronomical gallery, and the restoration workshops. These glazed surfaces, along with those of the administrative pavilion and the belfry gallery, are integrated into curved walls and overhangs that project into the park.

The architects' work was awarded the Prix de l'architecture béton 1977. In 1978 the museum received the Prix européen du musée de l'année 1977, which notably paid tribute to the museographers Serge Tcherdyne, Pierre Bataillard, and Mario Galloponi. The interior is characterized by restrained presentation, atmospheric effects, and materials chosen for elegance; indirect lighting emphasizes perspective, while spherical and cylindrical display cases echo the roundness of dials without obstructing the space.

The building has been described as a significant example of Swiss museum architecture of the 1970s, notably for its integration into the park and its use of exposed concrete. Its predominantly underground layout was intended to preserve the existing park while providing continuous, modular exhibition volumes suited to objects sensitive to light. The architectural design forms an integral part of the visitor experience, with fluid circulation and changing levels supporting a chronological and thematic parcours dedicated to the measurement of time.

A monumental carillon by Onelio Vignando, installed on the museum forecourt in 1980, complements the site. Conceived as an animated work combining bell sounds, movements of mobile elements, a soundscape, and light effects, it reflects the initial intention to make the forecourt a lively meeting point within the park. The structure measures 14 meters long and 9 meters high, resting on stainless-steel tubes, controlled by a master clock and featuring a complex programmed animation at regular intervals.

The International Museum of Horology is located in La Chaux-de-Fonds, Switzerland. It is owned and operated by the city of La Chaux-de-Fonds and is listed as Swiss national cultural property of national importance. The museum maintains a website at http://www.mih.ch. A joint admission ticket allows visitors to also visit the Musée d'histoire de La Chaux-de-Fonds. The museum will be closed from November 3, 2025, until spring 2026 for renovation work, including the installation of an elevator for mobility-impaired persons.