Hidden waterfall trail in Starved Rock State Park offers a secret canyon hike close to Chicago, where seasonal falls, solitude, and adventure await.

Chimney Rock State Park is still only reachable via Lake Lure, with direct access from Asheville, Hendersonville and Black Mountain yet to resume.

Split Rock Lighthouse State Park Campground on Lake Superior was No. 3 on the list, while Scoria Pit campground in western North Dakota checked in at No. 8.