Kiener Plaza Splash Pad
✓ Last confirmed for the 2026 season
Where: 500 Chestnut St, St. Louis, Missouri
Season: seasonal (summer)
Hours: 6 a.m.-10 p.m.
Cost: free
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Downtown's civic front lawn combines a splash area with a dry playground of swings and climbing nets, all framed by a postcard view of the Gateway Arch. It is a convenient add-on to any downtown outing with kids.
What's on site. OpenStreetMap maps drinking water, parking at this location. No public toilets are mapped here — worth knowing before you commit to an afternoon.
When to go. Peak summer highs in St. Louis average 88°F — warm enough for a splash pad through most of the season without being punishing at midday.
If this one's closed or packed
Splash pads close for maintenance, run short seasons and fill up on hot weekends. There are 12 other pads within 5 miles and 31 within 15. These are the ones worth the drive — ranked by shade, toilets and cost first, then by how close they are: