Voted the #1 attraction in the state of Illinois … Starved Rock State Park is a wilderness area on the Illinois River in the U.S. state of Illinois. It’s known for its steep sandstone canyons formed by glacial meltwater. Several, including the St. Louis, French and Wildcat canyons, have waterfalls. A wooded trail leads to Lover’s Leap Overlook, with views of the river and Starved Rock Dam. Park wildlife includes white-tailed deer, bald eagles and migratory birds.