Kids will have a blast here playing on the concrete animals or sliding down the sea serpent slide. All of the other expected playground amenities are here as well, from swings to climbers. There are plenty of areas for picnicking under the trees and a picnic area for parties or large groups. Adults are not allowed without kids, and kids are not allowed without adults, so it's the perfect chance for a little together time. The Atlantis Play Center is located at: 13630 Atlantis Way Garden Grove, CA 92844 (714) 892-6015 Hours of Operation: Tuesday through Friday: From 10:00 a.m. to 2:00 p.m. Saturday: From 10:00 a.m. to 4:00 p.m. Sunday: From 12:00 noon to to 4:00 p.m.