What are some common free days at major zoos?

Many major zoos offer free admission several days out of the year, such as the Bronx Zoo in New York City, where general admission is free every Wednesday. The Lincoln Park Zoo in Chicago does not charge admission fees and is open to the general public 365 days a year.

The Oklahoma City Zoo holds several free admission days a year, including Father's Day, Mother's Day and Veteran's Day. The Denver Zoo lists upcoming free days on its website. The San Francisco Zoo & Gardens hosts occasional free days for residents of the city of San Francisco. Individuals interested in visiting a zoo should visit the local zoo's website to see if free general admission is offered on specific days.