St. Joe State Park is a public recreation area consisting of 8243 acre on the south side of Park Hills, Missouri, along the flanks of the Saint Francois Mountains. The state park includes the Missouri Mines State Historic Site with its former St. Joe Minerals mill buildings and museum of geology and mining. The park features a 2000 acre off-road vehicle (ORV) riding area located on the old lead mine tailings dumps, camping facilities, and trails for hiking, bicycling, and horseback riding.