Natural History Museum of Geneva

Janus, a two-headed tortoise, is the best-known resident of the Natural History Museum of Geneva (Muséum d'histoire naturelle de Genève), the largest natural history museum in Switzerland and one of the ten largest in Europe. Its collections hold more than 15 million specimens of animals, rocks and minerals from around the world, nearly half of all Switzerland's natural history collections, and are exhibited over four floors.

The museum is also a research centre. Its holdings include important scientific material associated with Geneva naturalists and continue to grow through field missions and research work. It maintains a scientific library and has published the Revue suisse de Zoologie since 1893.

The institution dates from the end of the 18th century and moved several times before settling in its present building in Malagnou Park. It is listed as a Swiss cultural property of national significance and is part of Muséum Genève, run by the City of Geneva.