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Some of the interesting geological formations seen from Lands End were once hills in a vast plain that extended 27 miles past the current California coastline.
San Francisco rocks! The fascinating history behind Bay Area geology

San Francisco’s most unique and interesting attribute might be the Bay Area’s geology.

Two girls run in foreground of a wide shot of a crowded Ocean Beach.
Community Volunteer Programs

Volunteer on your own, with your family, or a few friends

drone
No-Fly Zone: Drones Prohibited in Golden Gate National Parks

Many shutterbugs received a drone as a gift over the holidays. We love the amazing images and video that these devices can capture, but unfortunately they’re not allowed in the Golden Gate National Parks. Learn why—and find other options for your flights.

Alcatraz Historic Prisons
Alcatraz at a Glance

Located just 1.5 miles off the coast of San Francisco, Alcatraz Island spans 22 acres in the heart of San Francisco Bay. Discover the rich history of this iconic landmark.

How to Get to Access to Adventure Day

At this annual event, Support for Families hosts a family fun day at the Crissy Field Center on Presidio Tunnel Tops! Learn how to get there, what to expect, and other accessibility options. 

Ai Weiwei Art Installation at Alcatraz
@Large: Ai Weiwei on Alcatraz in 3D: With Wind, New Industries Building

This large-scale installation, located in the building once used for prison labor, is based on the traditional Chinese "dragon kite" and features multiple kites strung together to create a single, large multipart kite. 

@Large: Ai Weiwei on Alcatraz in 3D: Yours Truly, Dining Hall
@Large: Ai Weiwei on Alcatraz in 3D: Yours Truly, Dining Hall

Yours Truly serves as a springboard for visitors to engage in a global conversation about the responsibilities that we all bear as members of the international community. 

@Large: Ai Weiwei on Alcatraz in 3D: Refraction, New Industries Building (with tunnel access)
@Large: Ai Weiwei on Alcatraz in 3D: Refraction, New Industries Building (with tunnel access)

Using the imagery of flight to evoke the tension between freedom and confinement, this monumental installation—weighing more than five tons—is modeled after a bird’s wing. 

@Large: Ai Weiwei on Alcatraz in 3D: Stay Tuned, A Block
@Large: Ai Weiwei on Alcatraz in 3D: Stay Tuned, A Block

Stay Tuned invites visitors into 12 individual cells in A Block, where they can sit and listen to spoken words, poetry, and music by people who have been imprisoned for the creative expression of their beliefs—as well as works created under conditions of incarceration.

@Large: Ai Weiwei on Alcatraz in 3D: Blossom, Hospital
@Large: Ai Weiwei on Alcatraz in 3D: Blossom, Hospital

With intricately detailed encrustations of ceramic flowers, Ai transforms the utilitarian fixtures (sinks, toilets, and tubs) in several hospital ward cells and medical offices into fantastical, fragile porcelain bouquets.