This elevation drawing of the Castillo de San Marcos from the south shows the baluarte de San Pedro with garita, curtain wall with fort entrance through the sallyport, and baluarte de San Agustin with garita. The openings along the top are cannon embrasures.The Castillo de San Marcos was renamed Fort Marion after the United States acquired Florida from Spain in 1821. In 1942, Congress restored the original name.
Drawn 1987 by Michael T. Webb as a part of the Historic American Buildings Survey. Drawing was downloaded from the Library of Congress Prints and Photographs Division Washington, D.C. and photo edited by the Florida Center for Instructional Technology.