The San Marcos de Apalache Historic Site is the location of an old fort, built by the early Spanish colonizers that settled in the area. The Spanish men arrived in 1528, but the fort was only built in 1679, a century and a half later.

Also known as Fort St. Marks by the English and American public, the San
Marcos de Apalache Historic Site saw a lot of action during its time. Being the second oldest Spanish fort in Florida, it has been subject to numerous attacks, seizures, and change of leadership. The site is also the main focus of the real Caribbean Pirates? attacks.

The site today is run as a public park, under the care of the Florida Department of Environmental Protection. It was declared a National Historic Landmark in 1966.