This 500-acre natural habitat zoo ranks among the top 5 in North America. Plant/animal exhibits feature North America (including polar bears, elk, Gila monsters, river otters and bobcats) and Africa (including African Plains and Pavilion). Open daily year-round, except Christmas Day. Hours: Mar.-Oct. 9 am-5 pm, Nov.-Mar. 9 am-4 pm. Admission Fee.