This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Fort Point San Francisco California LCCN.tif photograph digital file color Notes Title date and keywords provided by the photographer Designed at the height of the Gold Rush and built between and by the Army Engineers as part of defense system of forts planned for the protection of San Francisco Bay Credit line The Jon Lovelace