Sea Lion Aquatic Park
✓ Last confirmed for the 2026 season
Where: 1825 Short St., Lisle, Illinois
When: Late May through early August
Hours: typically daylight hours
Cost: free
zero-depthticketedtoddlerrestroomswater-park
A Lisle Park District aquatic park near Naperville with separate zones by age, four giant slides, a vortex pool, a lily pad crossing, and an ADA-accessible pool. Lockers and a snack bar make it workable for a full day out.