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Parks and environment

Nantes has 100 public parks, gardens and squares covering 218 hectares (540 acres). The oldest is the Jardin des Plantes, a botanical garden created in 1807. It has a large collection of exotic plants, including a 200-year-old Magnolia grandiflora and the national collection of camellia. Other large parks include the Parc de Procé, Parc du Grand Blottereau and Parc de la Gaudinière, the former gardens of country houses built outside the old town. Natural areas, an additional 180 hectares (440 acres), include the Petite Amazonie (a Natura 2000 protected forest) and several woods, meadows and marshes. Green space (public and private) makes up 41 percent of Nantes's area.

The city adopted an ecological framework in 2007 to reduce greenhouse gases and promote energy transition. Nantes has three ecodistricts (one on the Isle of Nantes, one near the train station and the third in the north-east of the city), which aim to provide affordable, ecological housing and counter urban sprawl by redeveloping neglected areas of the city.