Ha Ha Tonka Castle is one of the most famous castles in Missouri. Robert McClure Snyder began building this vacation estate in 1905. As an extremely successful businessman, Snyder wanted to find peace from city life in this amazing castle. However fate had other plans. and the castle was gutted by fire in 1942. The remains are now part of the Ha Ha Tonka State Park near Camdenton. Located along the Niangua arm of Lake of the Ozarks, Ha Ha Tonka Park is as unique and distinct as it name.