they represent, although the older areas (such as the Primate, Cat & Aquatics Building) are less thematic than those that were constructed more recently. Upon entering, visitors arrive in the Welcome Plaza which features administrative buildings, an amphitheater, food court, and the Zoo's largest souvenir shop. Numerous smaller concession/souvenir stands are located throughout the park. Aside from walking, Zoo patrons may opt to ride the "ZooTram" line which shuttles visitors between the Welcome Plaza (near African Elephant Crossing) and the Primate, Cat & Aquatics Building. The RainForest The RainForest, opened in 1992, is one of the most popular exhibits at the Cleveland Metroparks Zoo. It is contained in a large, two-story building with over of floor space, making it one of the largest indoor tropical environments in the world. The RainForest boasts more than 10,000 plants and over 600 animals from the tropical regions of Asia, Africa, and the Americas. The opening of the RainForest also introduced the Metroparks Zoo's first permanent reptile collection since the flooding in 1959. The RainForest is housed in a large glass and granite building, just outside the main entrance to the Zoo. The structure is divided into an outer ring—featuring an assortment of tropical plants, exhibits containing small mammals, a cafeteria, and a gift shop—and an inner area that contains the principal animal exhibits. Animal habitats are located on both floors of the RainForest. The exhibits contained on the ground floor are collectively known as the "Lower Forest", and those on the second floor are known as the "Upper Forest". Upon entering the RainForest, visitors are immediately greeted by a cascading, waterfall and a large tropical garden that soars upwards two stories. The wall behind the waterfall resembles Ancient Mayan ruins. Within the wall are a series of exhibits featuring small, New World mammals such as Pied tamarins, Geoffroy's tamarins, White fronted marmosets and endangered golden lion tamarins. The outer ring of the RainForest is also home to a wide variety of tropical plants including lancepods, balsam apples, tropical almonds, lipstick trees, numerous varieties of orchid, a kapok tree, and the rare titan arum (corpse flower). The central exhibit, called "Tropical Rain Storm", is a lifelike recreation of a rainforest island where simulated tropical rainfall occurs periodically. The island is inhabited by several Cape porcupines. The major animal of the Rainforest is the Bornean orangutan, of which the zoo has five: males Tiram and