Fort Matanzas National Monument defended the southern approach to the Spanish military settlement of St. Augustine. 300 acres of Florida coastal environment containing dunes, marsh, maritime forest, including threatened and endangered species. Enjoy the Boardwalk Nature Trail through the Forest Hammock, The Sandy Marsh Trail, Ferry to the Fort, and a picnic area shaded by an Old Oak Canopy. Located on Florida State Road A1A, Saint Augustine, Fl…