Zoo Aquarium de Madrid, Madrid

More than 2030 different species of mammals and birds live among the 20 hectares of parkland here. The zoo keeps more than 70 varieties of poisonous snakes, including vipers from Gabon and the black mamba (considered the most dangerous snake in the world). The Dolphinarium is probably the most popular area, as visitors love to watch these intelligent mammals show off their tricks. Dolphins, seals and sea lions give regular performances throughout the day. The aquarium holds two million liters of water and a spectacular tropical fish collection. There is a restaurant, bar, and snack bars.