10 Surprising Facts About Alcatraz Island
Alcatraz Island is best known as the formidable federal penitentiary that once held Al Capone, but its history is far more complex. Before it was a prison, it was the site of the first lighthouse on the U.S. West Coast, activated in 1854. This beacon guided ships through the foggy San Francisco Bay long before the island became synonymous with America's most notorious criminals.
1. It was a military fortress before a prison
Long before the federal penitentiary opened, Alcatraz served as a crucial military outpost. Following a presidential order in 1850, the U.S. Army fortified the island to create a "triangle of defense" for the San Francisco Bay. By the early 1860s, Alcatraz had 111 cannons mounted, making it the most heavily fortified military site on the West Coast, intended to protect the booming city during the Gold Rush and Civil War.
2. The first lighthouse on the Pacific Coast was here
In 1854, the original Alcatraz Lighthouse became the very first operational lighthouse on the West Coast of the United States. It was a critical navigational aid for the treacherous waters of the bay. The original structure was damaged in the 1906 earthquake and replaced by a taller, 95-foot concrete tower in 1909, which still stands today.
3. Some inmates asked to be transferred to Alcatraz
Despite its fearsome reputation, some federal prisoners requested a transfer to Alcatraz. The primary reason was the prison's policy of one man per cell, which was preferable to the often-overcrowded conditions at other penitentiaries. While privileges were minimal, the living conditions were considered better by some inmates than in other federal prisons.
4. Al Capone played banjo in the prison band
One of Alcatraz's most famous inmates, Al "Scarface" Capone, spent his time on The Rock working in the laundry and playing banjo in the inmate band, the Rock Islanders. This was a significant departure from his time at the Atlanta penitentiary, where he had managed to bribe guards and live in relative comfort. Alcatraz was designed to break such influence, treating every inmate equally regardless of their notoriety.
5. No one officially escaped successfully
During its 29 years as a federal penitentiary (1934-1963), 36 men were involved in 14 separate escape attempts. Officially, none were successful. Of the 36, 23 were caught, six were shot and killed, two drowned, and five are listed as "missing and presumed drowned." The most famous attempt was in 1962 by Frank Morris and the Anglin brothers, who vanished on a raft made of raincoats.
6. The 'Birdman of Alcatraz' had no birds at Alcatraz
Robert Stroud, famously known as the "Birdman of Alcatraz," never actually kept birds during his 17 years on the island. He conducted his famous ornithological research and wrote two books while imprisoned at USP Leavenworth in Kansas. He was transferred to Alcatraz in 1942, partly because his scientific equipment was being used to craft a still for alcohol, and his bird-keeping privileges were revoked.
7. The island was occupied by Native American activists
After the prison closed, Alcatraz became a powerful symbol for another reason. From November 1969 to June 1971, a group of activists called the Indians of All Tribes occupied the island. The 19-month protest drew national attention to the plight of Native Americans and advocated for Indian self-determination. The occupation ended federal policies aimed at terminating tribes and had a lasting impact on U.S. Indian policy.
8. It was named for pelicans, not prisoners
The name Alcatraz has nothing to do with its grim history. In 1775, Spanish explorer Juan Manuel de Ayala mapped the San Francisco Bay and named one of the islands "La Isla de los Alcatraces," which translates to "The Island of the Pelicans." The name was later anglicized and, through a mapmaker's error, applied to the island we know today.
9. Families and children lived on the island
Alcatraz wasn't just home to inmates; the prison guards and staff lived on the island with their families. During the penitentiary years, there were often 60 to 100 children living on The Rock. They would take a ferry to attend school in San Francisco each day. Despite living alongside America's most dangerous criminals, many former residents recall a surprisingly normal childhood in a tight-knit community.
10. It closed because it was too expensive
The Rock wasn't closed because it was inhumane or outdated, but because it was simply too costly to operate. The prison closed on March 21, 1963. Years of saltwater saturation had severely eroded the buildings, and the cost of repairs, combined with the expense of transporting fresh water and supplies to the island, made it nearly three times more expensive to run than any other federal prison.
Frequently asked questions
Who was the most famous prisoner at Alcatraz?
Al Capone is arguably the most famous inmate ever held at Alcatraz. He was transferred there in 1934 to prevent him from manipulating the system as he had in other prisons. Other notorious inmates included George "Machine Gun" Kelly, Robert Stroud ("The Birdman of Alcatraz"), and Alvin "Creepy" Karpis.
Did anyone really escape from Alcatraz?
Officially, no prisoner ever successfully escaped from Alcatraz. Five inmates, including Frank Morris and the Anglin brothers from the famous 1962 attempt, disappeared and are presumed to have drowned in the cold, swift currents of the San Francisco Bay.
Why is Alcatraz called 'The Rock'?
Alcatraz is nicknamed "The Rock" due to its location on a small, rocky island in the middle of San Francisco Bay. This name also reflects its reputation as an inescapable, fortress-like prison.
Ready to uncover the secrets of The Rock for yourself? You can book tickets to explore the historic cellhouse and island grounds.