Historic site
Castillo de San Marcos National Monument
391 locals recommend,
Tips from locals
The Castillo de San Marcos is the oldest masonry fort in the continental US. It is a large Spanish stone fortress that was built to protect and defend Spain's Claims in the New World. Now it's a popular National Monument.
Walk around the exterior for free or grab a ticket and see what it was like to live in the fort. Kids under 16 are free!
Things to do nearby
Locals also recommend
Location
11 S Castillo Dr
St. Augustine, FL
Historic District