Main Post in San Francisco City and County, California — The American West (Pacific Coastal)
Old Stone Powder Magazine
Presidio of San Francisco
Photographed by Douglass Halvorsen, July 26, 2025
1. Old Stone Powder Magazine Marker
Constructed by the U.S. Army
After the Presidio was occupied
by American forces
Built of materials salvaged from earlier
Spanish or Mexican structures,
it dates back to the period of 18471863.
Erected 1958 by The Presidio Society, Inc.
Topics. This historical marker is listed in this topic list: Military. A significant historical year for this entry is 1847.
Location. 37° 47.949′ N, 122° 27.514′ W. Marker is in San Francisco, California, in San Francisco City and County. It is in Main Post. It is on Anza Avenue, on the left when traveling north. Touch for map. Marker is at or near this postal address: 95 Anza Avenue, San Francisco CA 94129, United States of America. Touch for directions.
Regionally, this marker is on California’s Coast Ranges. It is also on the American Pacific Coast. Globally, it is in North America, on the Ring of Fire, in the Pacific Rim, in the Western Hemisphere, in the Western World, and in the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexicos Alta California.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Ammunition Magazine (a few steps from this marker); Pershing Square (within shouting distance of this marker); Outpost of an Empire (within shouting distance of this marker); Bicentennial Tree (within shouting distance of this marker); North West Corner of Original Presidio (about 300 feet away, measured in a direct line); Site of General Pershings Quarters (about 300 feet away); a different marker also named Ordoρez Gun (about 300 feet away); Montgomery Street Barracks (about 300 feet away). Touch for a list and map of all markers in San Francisco.
this page online
Related marker. Click here for another marker that is related to this marker.
Photographed by Douglass Halvorsen, July 26, 2025
2. Old Stone Powder Magazine Marker
Photographed by Douglass Halvorsen, July 26, 2025
3. Old Stone Powder Magazine
Credits. This page was last revised on September 20, 2025. It was originally submitted on September 20, 2025, by Douglass Halvorsen of Klamath Falls, Oregon. This page has been viewed 145 times since then and 29 times this year. Photos: 1, 2, 3. submitted on September 20, 2025, by Douglass Halvorsen of Klamath Falls, Oregon. • Andrew Ruppenstein was the editor who published this page.
