Denver Zoo, Denver

Where else can you visit polar ice caps, a tropical forest, the African savannah and a jungle all in one day? The zoo is a state-of-the-art habitat featuring more than 3,500 animals representing 600 species. Visit with sloths, tree frogs, and a moray eel at the indoor Tropical Discovery exhibit. Or wander through the seven-acre Primate Panorama exhibit. From cold climate penguins to tropical flamingos, Bird World will inspire your appreciation of winged things. It is open 365 days a year.