Dorney Park & Wildwater Kingdom
$50+Ride steel and wooden roller coasters, then cool off on the slides and wave pools of the included water park.

Lost River Caverns is an attraction in Hellertown, PA, part of the Philadelphia guide. Cost: under $25.
726 Durham Street · Hellertown, PA
Lost River Caverns has offered guided walking tours through five naturally formed limestone rooms since 1930. The family-owned attraction on the edge of Hellertown showcases stalactites, stalagmites, and an underground stream, plus a rock shop and mini golf on the surface grounds. It's one of the few show caves open to the public in Pennsylvania.
The closest stops to Lost River Caverns, ordered by straight-line distance. A few more like it, plus some different kinds of fun so you can build a full day.
Ride steel and wooden roller coasters, then cool off on the slides and wave pools of the included water park.
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