In addition to its wonderful penguin and bird houses, bear and cat habitats and sea lion pool, this accessible zoo replicates animal environments and presents activities designed to encourage the animals' natural behaviors. Worth a special stop is the Regenstein Center for African Apes, an impressive 29,000sq ft indoor-outdoor habitat housing gorillas and chimps in a bamboo forest. Fun for visitors and apes alike, the center is part o the zoo's commitment to the study and conservation of great apes.