Opened in 1874, the 42 acres of America's first zoo are home to more than 1,900 animals representing six continents. Small and well landscaped, it has naturalistic habitats that allow you to get close enough to hear the animals breathe, though it's easy to feel some animals might like more space. Remember to look up: some animals travel around the grounds via see-through overhead trails called Zoo360. Conservation information boards and talks by keepers are excellent. At this writing, a major Bear Country exhibit will open in spring 2026. There's plenty to see, with some areas, such as the interactive Flamingo Cove habitat, more modern than others. The Reptile and Amphibian House houses species from 15-foot-long snakes to seven Western Santa Cruz Galápagos tortoise hatchlings (born in 2025), and the 2½-acre Primate Reserve is home to species such as gorillas and orangutans. Other attractions include the McNeil Avian Center, a state-of-the-art nest for birds; and African Plains, with giraffes, rhinoceroses, and zebras. The children's zoo, KidZooU, has indoor and outdoor learning areas. The Wild Explorer VR experience (extra charge) takes visitors from the depths of the ocean to the African plains. It takes two or three hours to explore the exhibits. Advance online ticket purchase (timed entrance) recommended for general admission.