The Eden Project is a visitor attraction in Cornwall in the United Kingdom. Inside the bio-domes are plants collected from all around the world. The Eden Project includes environmental education focusing on the interdependence of plants and people; plants are labelled with their medicinal uses. The massive amounts of water required to create the humid conditions of the Tropical Biome, and to serve the toilet facilities, are all sanitized rain water that would otherwise collect at the bottom of the quarry.
The project took 2½ years to construct and opened to the public on March 17, 2001.