Visit Castillo de San Marcos

The Castillo de San Marcos is the oldest masonry fort in the United States located in the city of St. Augustine, Florida. Construction was begun on the fort in 1672 by the Spanish when Florida was a Spanish possession. During the twenty year period of British occupation from 1763 until 1784, the fort was renamed Fort St. Mark, and after Florida became a U.S. territory in 1821 the fort was again renamed to Fort Marion, in honor of revolutionary war hero Francis Marion.