San Marcos de Apalache Historic State Park is a Florida State Park in Wakulla County, Florida organized around the historic site of a Spanish colonial fort (known as Fort St. Marks by the English and Americans), which was used by succeeding nations that controlled the area.

It came under successive control by Great Britain, Spain, the United States and, lastly, the Confederacy during the American Civil War.

[1][3] Designated as a National Engineering Landmark, the fort site has been highlighted on the Florida Native American Heritage Trail.

That donation apparently never happened, however, and the site remains a Florida State Park and a National Historic Landmark.

[5] American settlers began penetrating the Southeast after the Revolution, settling deeper into Georgia and into the Mississippi and Alabama Territories.

General Andrew Jackson led some raids into this area during the First Seminole War and had his forces seize the Spanish Florida fort in 1818.

In 1819, the United States purchased East and West Florida from Spain, via the Adams-Onis Treaty, including the fort site.