Fort Matanzas National Monument

Originally built as a watchtower to aid in the defense of St. Augustine from enemy ships, this well-preserved Spanish fort was named a national monument in 1924. Breathtaking beaches, sand dunes and abundant wildlife, including nesting sites for endangered sea turtles, surround the fort. A short nature trail allows you to tour the small island and guided tours take place every hour. The only way to reach the fort is by ferry. Admission is free for both the park and the ferry ride, but donations are happily accepted.