Founded in 1882, the Cleveland Metroparks Zoo is the seventh oldest in the United States and home to thousands of animals representing seven continents. The zoo has an outdoor area covering 66 hectares (165 acres) and an indoor area covering 0.8 hectares (2 acres). Exhibits include a Northern Trek, featuring bears, Siberian tigers, sea lions and reindeer, an Australian Adventure, with koalas, snakes, kangaroos and wallabies, and the Primate Cat and Aquatics Building, which houses animals including gorillas, lungfish and cheetahs. One of the zoo’s most famous exhibits is the Rainforest, an indoor area that presents the delicate animal and plant life of the disappearing tropical rainforests.