The Bronx Zoo is the largest metropolitan zoo in the United States. The zoo has 2.15 million yearly visitors and is world-renowned for its large and diverse animal collection as well as its award-winning exhibitions. Within its 265 acres of park lands and naturalistic habitats, there are four zoos and one aquarium managed by the Wildlife Conservation Society. The park has two types of exhibits - free and premium. The free exhibits are included with the park's general admission while the premium exhibits require additional fees. A "Total Experience" admission allows access to all exhibits.