Ha Ha Tonka State Park

Perched on the Lake of the Ozarks in Missouri, Ha Ha Tonka State Park is equal parts nature and history. The central landmark of the park is the ruined European-style stone castle atop a bluff overlooking the lake, built in the early 1900s by a businessman. More than 15 miles of trails wind through the park, and picnicking, fishing, and camping are also available.