Castillo de San Marcos, 1 Castillo Drive, Saint Augustine, St. Johns County, FL

Significance: The star fort and its moat and outworks were built to protect Spanish territory in Florida from attacks by the English. Castillo de San Marcos is the oldest masonry fort in the continental U.S. It was the site of a British Garrison in the Revolutionary War, was acquired by the U.S. in 1819 and used as a military prison. The fort last saw action in the Spanish American War in 1898.

Unprocessed Field note material exists for this structure: FN-84

Survey number: HABS FL-17

Building/structure dates: 1672- 1695 Initial Construction

Building/structure dates: 1738- 1740 Subsequent Work

Building/structure dates: 1752- 1756 Subsequent Work

Building/structure dates: 1762 Subsequent Work

National Register of Historic Places NRIS Number: 66000062

forts and fortifications stone buildings military art and science war revolutionary war war spanish american war prisoners of war galleries and museums star forts watch towers bastions parade grounds chapels hispanic heritage florida castillo marcos san marcos drive castillo drive saint augustine johns johns county san augustine ignacio daza historic american buildings survey w e milburn howard ransom works progress administration ultra high resolution high resolution library of congress national register of historic places

1933 - 1970

Library of Congress

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