"The Philadelphia Zoo’s 42-acre garden is home to more than 1,300 animals, many of them rare and endangered. By connecting people with wildlife, the Philadelphia Zoo creates joyful discovery and inspires action for animals and habitats. Cheetahs, hippos, giraffes and much more make the Zoo Philadelphia's leading family attraction with over 1.35 million visitors last year."

http://www.philadelphiazoo.org/

6 general admissions, use by 1/31/2017.