Travel website tripadvisor.com named Omaha's Henry Doorly Zoo as the number one zoo in the world, beating out San Diego.
The site says its awards are based on "millions" of reviews from its users."Award winners were determined using an algorithm that took into account the quantity and quality of reviews for zoos and aquariums worldwide, gathered over a 12-month period," said the website.Renamed and reorganized in the 1960s by the Omaha Zoological Society, the Henry Doorly Zoo has roots dating to the 1880s when, as Riverview Park, it contained about 120 animals, including two bison on loan from "Buffalo Bill" Cody.World's top 10 zoos according to TripAdvisor1. Henry Doorly Zoo (Omaha, Nebraska)2. San Diego Zoo (San Diego)3. Loro Parque (Puerto de la Cruz, Spain)4. St. Louis Zoo (St. Louis)5. Singapore Zoo (Singapore)6. Chester Zoo (Chester, UK)7. Prague Zoo (Prague)8. Tiergarten SchoenbrunnZoo Vienna (Vienna)9. Bioparc Valencia (Valencia, Spain)10. Gramado Zoo (Gramado, Brazil)