Memory Alpha
Memory Alpha
Multiple realities
(covers information from several alternate timelines)

Seen from the north in the 2270s

The Presidio in an alternate 1944

The Presidio, also known as the Presidio of San Francisco, was the site of an ancient army base in the city of San Francisco on Earth.

Starfleet Command Headquarters and Starfleet Academy eventually occupied the Presidio, as well as grounds north of the Golden Gate Bridge in Marin County. Mindful of the site's history, Starfleet maintained the ancient coastal defense installation "Fort Point", as well as the iconic Golden Gate Bridge (completed in 1937) until it was catastrophically damaged in a Breen attack that took place in 2375. (Star Trek: The Motion Picture; DS9: "The Changing Face of Evil"; VOY: "Endgame")

There was once a mine shaft located in the center of the Presidio, within which there was an entrance to an underground cavern where Data was decapitated. (TNG: "Time's Arrow, Part II")

A photograph owned by Captain Jonathan Archer featured the "California Clipper" flying over the Golden Gate Bridge and the Presidio. (ENT: "Broken Bow", "Fortunate Son")

In the alternate reality, Starfleet Headquarters was not located at the Presidio; instead, it was located at Second Street. The Presidio was the home for Starfleet Academy and several shuttle hangars. In 2259, its location in San Francisco was visible on a map of the San Francisco Bay that was displayed on a powerwall in the office of Admiral Alexander Marcus. (Star Trek; Star Trek Into Darkness)

In 2399, the Presidio appeared on a satellite image of the bay as Dahj Asha was searching for the location of Jean-Luc Picard. (PIC: "Remembrance")

In an alternate timeline in 2404, USS Voyager had become a museum, placed on the grounds of the Presidio. (VOY: "Endgame")

The Presidio was founded as the northernmost outpost of the Spanish Empire in 1776, and later occupied by Mexico and the United States of America. It was key to the defense of San Francisco Bay and the North American west coast until its obsolescence in the late 20th century. Currently, the headquarters of Industrial Light & Magic are located on the site.
The shore battery "Fort Point" (completed in 1861) is visible as a small brick structure at the base of the Golden Gate Bridge in a scene from Star Trek: The Motion Picture, as Admiral Kirk's air tram approaches the air tram station at the Presidio. It can also be clearly seen in the background in 1986 in Star Trek IV: The Voyage Home.

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