 A Tocobaga Indian mound that is situated in the park is a National Historic Landmark known as the Safety Harbor Site.The temple mound is one of the last remnants of the Tocobaga on the Pinellas Peninsula.Records indicate that Pedro Menéndez de Avilés, the founder of St. Augustine, Florida, visited the site in 1566 to help broker a truce between the Tocobaga and the Calusa to the south.