5 Best Zoos in the US

2. Omaha’s Henry Doorly Zoo and Aquarium

Total Animals in the Zoo: 17,000

Annual Visitors: 2 million

Ranked as one of the top 5 Zoos in the world by TripAdvisor Inc (NASDAQ: TRIP), the Henry Doorly Zoo is one of the leading zoos engaged in research and conservation efforts. It has been in operation since 1894 and is frequented by over 2 million visitors annually. It is home to an astounding 962 unique species of animals. Some of its popular exhibits include Kingdoms of the Night, the Lied Jungle, and the Desert Dome.