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Fort Mason in San Francisco City and County, California — The American West (Pacific Coastal)
 

Black Point Fortifications (1797 - 1909)

— Golden Gate National Receation Area —

 
 
Black Point Fortifications Marker image. Click for full size.
Photographed by Alice Mansell, June 29, 2026
1. Black Point Fortifications Marker
Inscription.
Defending from an Enemy that Never Came
Both Spanish and American militaries defended the deep water harbor just east of here with artillery mounted on this strategic bluff overlooking the harbor and bay. Neither ever fired a shot in anger; perhaps because of these defenses?

The Spanish first installed artillery here in 1797 to deter invasion by English, Russian or other potential enemy ships. In 1863, as the Civil War raged back East and concerns of Confederate or British raids mounted, Major General Henry Halleck ordered this bluff re-fortified with heavy artillery. A dozen large guns were placed at Black Point batteries to augment guns at Fort Point, Angel Island, and Alcatraz Island.

What are the impacts of protecting the things we value?

(Captions:)
Six 10-inch caliber cannon like the one you see mounted here today in the West Battery were aimed at the Golden Gate. They could shoot 128 pound cannonballs up to 2 miles. Six cannons in the East Battery were aimed north to overlap with fire from Alcatraz Island.

When the Spanish American War broke out in 1898 Black Point’s Civil War batteries were in poor
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shape. Rather than repair their cutting wooden platforms two concrete gun mounts were built beside the West Battery. Two Rodman canon like the one you today were placed on the new platforms to protect against attack from Spanish ships.

The guns here fired salutes during special occasions, but never fired on an enemy vessel. San Francisco harbor was never raided during the Civil War or later, and eventually the cannon were removed. In the 1990s the battery was restored.

 
Topics. This historical marker is listed in these topic lists: Colonial EraForts and Castles.
 
Location. 37° 48.442′ N, 122° 25.725′ W. Marker is in San Francisco, California, in San Francisco City and County. It is in Fort Mason. It can be reached from Battery Street. Marker is not easily seen from Battery Street at Fort Mason. It is obscured by thick vegetation and only visible by foot on a dirt trail north of Battery Street. Touch for map. Marker is in this post office area: San Francisco CA 94109, United States of America. Touch for directions.

Regionally, this marker is on California’s Coast Ranges.
Black Point Fortifications (1797 - 1909) Marker image. Click for full size.
Photographed by Alice Mansell, June 29, 2026
2. Black Point Fortifications (1797 - 1909) Marker
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 Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within walking distance of this marker: San Francisco Port of Embarkation (within shouting distance of this marker); John Charles Frιmont and “Manifest Destiny” (within shouting distance of this marker); Brigantine Galilee (about 300 feet away, measured in a direct line); Fort Mason Historic District (about 500 feet away); a different marker also named Fort Mason Historic District (about 600 feet away); San Francisco Port of Embarkation (1932-1962) (about 700 feet away); Phillip Burton (approx. 0.2 miles away); Golden Gate National Recreation Area Legislation (approx. 0.2 miles away). Touch for a list and map of all markers in San Francisco.
 
Another marker is no longer nearby. Congressman Phillip Burton (was approx. 0.2 miles away but has been permanently removed).
 
More about this marker.
Black Point Fortifications (1797 - 1909) Marker image. Click for full size.
Photographed by Alice Mansell, June 29, 2026
3. Black Point Fortifications (1797 - 1909) Marker
Marker is between the large white hostel building and the cannon on display. It is below and to the west of the remnants of Burnham Battery marked on some online maps.
 
Rodman Cannon image. Click for full size.
Photographed by Alice Mansell, June 29, 2026
4. Rodman Cannon
 
 
Credits. This page was last revised on July 8, 2026. It was originally submitted on July 8, 2026, by Alice Mansell of Los Altos, California. This page has been viewed 6 times since then. Photos:   1, 2, 3, 4. submitted on July 8, 2026, by Alice Mansell of Los Altos, California. • Andrew Ruppenstein was the editor who published this page.
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Jul. 12, 2026