Although best known for its 29 years as a federal penitentiary, the island of Alcatraz was also a military fort, used by the army during the Civil War to protect San Francisco from Confederate raiders ...

Alcatraz Island ... and the Army constructed a fort there, where it imprisoned Confederate soldiers during the Civil War. It continued to serve as a military prison until 1933, when the Justice ...

(CNN) — The future of Alcatraz lies in one man’s hands. In 2023, as sea levels rose around the iconic island in San Francisco Bay, Pete Kelsey — a technologist specializing in 3D data ...