Ha Ha Tonka State Park is a state-owned, public recreation area encompassing over on the Niangua arm of the Lake of the Ozarks, about five miles south of Camdenton, Missouri, in the United States. The state park’s most notable feature is the ruins of Ha Ha Tonka, an early 20th-century stone mansion that was modeled after European castles of the 16th century. A series of trails and boardwalks makes it easy for visitors to experience all the park has to offer, from its historic castle and geologic wonders to its wooded areas and open rocky glades. Picnic sites beckon visitors for a relaxing lunch in a scenic setting unparalleled in the lake area. All these fascinating elements combine to create a park that can be explored and enjoyed time after time.