Kades Splashpad (Kades Playground)
✓ Last confirmed for the 2026 season
Where: 776 Joachim Avenue, Herculaneum, Missouri
When: seasonal (summer)
Hours: typically daylight hours
Cost: free
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Jefferson County's most distinctive splash stop pairs its pad with a playground built around a replica volcanic mountain, complete with lava etching. The theming makes it worth the drive even for families outside Herculaneum.