Central Park Zoo, New York

This Central Park zoo has a smart, eco-friendly environment. Animal cages have been dispensed with, in favor of open-air habitats, water and pseudo-forests. The Center is divided into three major territories; the Polar Circle, the Temperate Territory and the Tropic Zone, all of which encircle the central Sea Lion Pool. In the Polar Circle, glass walls allow you to see penguins and polar bears swimming just inches from your face. Check the website for admission prices and further information. Hours are seasonal check website for more details.