Audubon Institute: Houses a zoo, aquarium and other adventure centers; includes an interactive swamp, zoo tour, and a "creature feature" explaining some of the zoo's animals.Global Wildlife Center: Largest free-roaming wildlife park in the United States.John Brown New Orleans Sidewalk Astronomer: Scientific, educational and fun. Located in the French Market next to the Cafe' Du Monde.New Orleans Botanical: Showcasing over 2,000 varieties of native and exotic plants, in an Art Deco WPA garden under impressive mature live oaks.