Meramec Caverns
$25–$50The Route 66 legend painted on barn roofs across the Midwest: guided tours through 4.6 miles of limestone caverns and the towering Stage Curtain formation.

Photo: Don Kasak from St. Louis, MO, US, CC BY 2.0, via Wikimedia Commons. Cropped and resized.
A Missouri state park on the Meramec River known for a decorated cave with guided tours.
7556 Highway H, Leasburg, MO 65535-9136, United States · Leasburg, MO
This Missouri state park sits along the Meramec River. Its underground cave holds tall mineral formations and has been recognized as a National Natural Landmark. Guided tours lead visitors through the cave. Above ground, Vilander Bluff Natural Area offers wide views over the river, and the river itself suits canoeing and fishing. Visitors can also camp, hike, picnic, and swim.
The closest stops to Onondaga Cave State Park, ordered by straight-line distance. A few more like it, plus some different kinds of fun so you can build a full day.
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