The island's lighthouse was replaced in 1909 by the current structure, which remains the oldest operating lighthouse on the West Coast.
During its 29 years as a federal prison, there were 14 separate escape attempts involving 36 different inmates.
No inmate successfully escaped the island; those who were not captured were presumed drowned in the cold, treacherous currents of San Francisco Bay.
The island was used as a military fort and fortress during the American Civil War to defend the San Francisco harbor.
The island's original Spanish name, La Isla de los Alcatraces, translates to 'The Island of the Pelicans.'
Prisoners were granted basic necessities like food, clothing, shelter, and medical care, but everything else, including work and library access, was earned as a privilege.
The occupation by Native Americans from 1969 to 1971 resulted in graffiti that is still visible in some areas of the island today.
Alcatraz was the only prison in the federal system to provide hot water showers to prisoners, a policy intended to prevent inmates from acclimatizing to cold water temperatures, making an escape swim more difficult.
The water temperature around the island averages between 50 and 55 degrees Fahrenheit year-round.
The island’s gardens, once tended by inmates, have been restored and now showcase rare plant species that survived the island's harsh climate.
Alcatraz Island is a former federal penitentiary located 1.25 miles off the coast of San Francisco, managed by the National Park Service. The site hosted a high-security prison from 1934 to 1963, housing notorious inmates including Al Capone and Robert Stroud. Beyond its prison history, the island was the site of the first lighthouse on the West Coast, built in 1854. In 1969, the island was occupied by a group of Native American activists for 19 months, a pivotal event in the Red Power movement. Visitors access the main prison building via a steep quarter-mile hike from the dock. The facility now features an audio-guided tour that includes recordings of former inmates and correctional officers. The island serves as a nesting ground for various seabirds, contributing to its designation as part of the Golden Gate National Recreation Area. The site remains largely preserved, including the cell blocks, dining hall, and exercise yard.
The exercise yard overlooking the Golden Gate Bridge and the city skyline.
Wear layers of clothing, as the temperature on the island is significantly colder and windier than in downtown San Francisco.
Book reservations well in advance, as tickets often sell out weeks ahead of time due to high demand.
Bring comfortable, non-slip walking shoes to navigate the steep, uneven inclines and concrete surfaces.
Do not attempt to swim to the island, as the currents are dangerous and it is strictly prohibited; do not wait until the day of your visit to purchase tickets.
Open daily except for major winter holidays; check official NPS listings for potential storm-related closures.
Maintain a respectful tone inside the cell house; do not touch historical artifacts or graffiti; pack out any trash generated during the visit.
