Lincoln Park Zoo, Chicago, IllinoisWith a pair of swans gifted from New York's Central Park, Chicago's Lincoln Park Zoo was established more than 150 years ago. When you visit today, you can observe more than 200 species of mammals, reptiles, and birds at the only privately managed free zoo in the U.S.
Is there a day when admission is free? Limited Admission is free all day on Wednesdays at the Bronx Zoo. ADVANCE TIMED TICKETS ARE REQUIRED. The Wednesday Ticket Store opens on Mondays at 5:00pm for that Wednesday's reservations.