Number 10: Castaway Bay
- Location: Sandusky, Ohio (located next to -- and operated by -- Cedar Point)
- Indoor Water Park Square Footage: 38,000
The compact indoor water park features plenty of activities, including the Rendezvous Run indoor water coaster, a wave pool, the Lookout Lagoon Family Funhouse (with the ubiquitous water park tipping bucket), and The Grotto, an indoor/outdoor whirlpool that offers plenty of hot tub yin to a cold winter day's yang.
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