The Saint Louis Zoo was chosen as the top winner for the second year in a row in the “Best Zoo” category of the 10Best Readers’ Choice Awards contest sponsored by USA TODAY.

Sea Lion Sound also won “Best Zoo Exhibit” in a separate poll. The Saint Louis Zoo and Sea Lion Sound were among 20 nominated U.S. zoos and zoo exhibits. Visitors to 10Best.com were asked to vote for their favorite zoo and exhibit.

“We’re humbled to be chosen again as the ‘Best Zoo’ by our dedicated fans in the St. Louis region, across Missouri and friends around the country,” said Dr. Jeffrey P. Bonner, Dana Brown president and CEO of Saint Louis Zoo. “Our visitors, volunteers, members, generous donors, employees and especially the taxpayers of St. Louis City and St. Louis County are the real champions. It’s through their strong support that we can provide superior care for the animals, save wildlife in wild places, connect people with nature, and offer a great place to spend time with friends and family members.”

Chosen as America’s top free attraction and best zoo, the Saint Louis Zoo attracts more than 3 million visitors a year.

Other zoos included in the Top 10 Best Zoos list include Omaha’s Henry Doorly Zoo and Aquarium, Cincinnati Zoo & Botanical Garden, Cheyenne Mountain Zoo and Fort Worth Zoo.