St. Augustine - Castillo de San Marcos National Monument

Built by the Spanish in St. Augustine to defend Florida and the Atlantic trade route, Castillo de San Marcos National Monument preserves the oldest masonry fortification in the continental United States and interprets more than 450 years of cultural intersections.

There are a lot of things for kids to do at Castillo de San Marcos National Monument. You can explore the fort's lower rooms, the fort's historic weapons, and the upper gun deck. Meet rangers, volunteers, or costumed soldiers who can share stories about the park and answer your questions. Children also enjoy walking the outside perimeter where you can experience the moat, water battery, and use the north boardwalk. The open, grassy 20 acres the fort sits on makes a great place for picnicking or kite flying on the north lawn. Explore the Map, download the App, or experience the Virtual Tour.

The Castillo de San Marcos is open to the public seven days per week except Thanksgiving Day, and Christmas Day.