There’s more to explore at the Cleveland Metroparks Zoo! Don’t miss this Cleveland Halloween tradition - Boo at the Zoo. Bring your kids in costume and enjoy trick or treating, unlimited 4-D Theater movies, carousel and train rides, costumed characters, and the monster mash dance party. This limited time event will run Fridays through Sundays, October 11th - 27th, from 5pm to 9pm.