Wildcat Den State Park is a state park in Muscatine County, Iowa, United States. The park features 75-foot cliffs, rock formations, and several historic structures. The 1848 Pine Creek Gristmill and Pine Mill Bridge are both on the National Register of Historic Places. The campground has 20 campsites, but lacks modern restroom facilities. Campsites and two open shelters can be reserved ahead of time through the online reservation system, iowastateparks.reserveamerica.com.