The Montreal Biodome (French: Biod?me de Montr?al) is a museum that allows visitors to walk through replicas of four ecosystems found in the Americas.

The building was designed by French architect Roger Taillibert as part of his larger plan for an Olympic park that included the Montreal Olympic Stadium and the Olympic pool. The venue was a combined velodrome and Judo facility. Construction of the building began in August 1973, and the facility was officially opened in April 1976 as a velodrome. It hosted both track cycling and judo events. Renovations on the building began in 1989 and in 1992 the indoor nature exhibit was opened.

The Montreal Biodome is one of four facilities operated by the Montreal Nature Museum, which include the Montreal Insectarium, Montreal Botanical Garden, and Montreal Planetarium.[5] It is an accredited member of both the Association of Zoos and Aquariums (AZA) and the Canadian Association of Zoos and Aquariums (CAZA).

The facility allows visitors to walk through replicas of four ecosystems found in the Americas:
The Tropical Forest is a replica of the South American rainforest.
The Laurentian Forest is a replica of the North American wilderness.
The Saint Lawrence Marine Eco-system is an estuary habitat modelled on the Gulf of Saint Lawrence.
A polar area that is divided into Arctic and Antarctic.

The Biodome features an audio guide system that lets visitors get information about what they are viewing, and also provides statistics to the facility about what the visitors find most interesting. Visitors can rent a receiver programmed to receive French, Spanish, or English for adults, or French or English for children.