The Biosphäre Potsdam (7,000 m²) is an indoor tropical botanical garden located in the Volkspark Potsdam. The garden contains approximately 20,000 tropical plants representing about 350 species, including orchids, epiphytes, and trees about 14 meters in height, including a palm grove and mangrove swamp. It also includes tropical crops, a waterfall, two lakes, and various types of tropical wildlife, including iguanas, snakes, spiders, frogs, geckos, and pheasants, as well as a butterfly house containing about 30 butterfly species. (source: | | Home developed film.