Explore Alcatraz Island, Alcatraz with Stanza's GPS-triggered offline audio guide.

Alcatraz Island is a small island located in San Francisco Bay, California, famously known as a former federal prison. It is now part of the Golden Gate National Recreation Area and a major tourist attraction.
As visitors walk up the hill, they encounter the formal entrance to the federal penitentiary. This area highlights the transition from a military fort to the 'Rock'.

Completed in 1912, this massive concrete structure was once among the largest reinforced concrete buildings in the entire world.
The heart of the prison experience, these corridors were the main thoroughfares for inmates. Broadway was the central hall where every prisoner was visible to the guards.

In these cramped five-by-nine-foot spaces, inmates spent the majority of their time with only the barest essentials provided.
Known as the treatment unit, D-Block housed the most difficult prisoners and contained the dreaded 'holes' for solitary confinement.

When these heavy steel outer doors swung shut, the inmate inside was plunged into absolute, suffocating darkness.
The dining hall was the most dangerous place in the prison due to the concentration of inmates. Guards monitored from elevated galleries with tear gas canisters overhead.

Despite being the place for meals, the dining hall was widely considered the most dangerous room in the entire prison.
The yard offered inmates their only outdoor time and a tantalizing view of the San Francisco skyline and the Golden Gate Bridge.

This walled outdoor space was the site of the violent 1946 Battle of Alcatraz, a forty-eight-hour struggle for control.
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