Castillo de San Marcos, Florida

Castillo de San Marcos – The Oldest Spanish Fort In The United States Of America

In the 1500s, Castillo de San Marcos was built to protect the Spanish colonists who established the city of Saint Augustine within the former colony of Florida.

Before the Revolutionary War, Britain obtained the lands in Florida from Spain. At the end of the Revolutionary War the British, agreed to cede the lands in Florida back to Spain. In 1819, the United States purchased the lands in Florida from Spain, this acquiring the oldest fort in the continental United States.