Presidio
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. (; ; )

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. ()

A photograph owned by Captain Jonathan Archer featured the "California Clipper" flying over the Golden Gate Bridge and the Presidio. ()

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 . (; )

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

In an alternate timeline in 2404,  had become a museum, placed on the grounds of the Presidio. ()

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Earth geography
Earth locations