Castillo San Cristobal, Ravelin, Puerta de Tierra, San Juan, San Juan Municipio, PR
Summary
Public domain scan of a technical diagram, plan, or drawing, free to use, no copyright restrictions - Picryl description.
Tags
Contributors
Historic American Buildings Survey, creator
Location
Valle de San Juan, 18.46638, -66.09691
Source
Library of Congress
Copyright info
No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html