In X-Men: The Last Stand, what is the name of the island where Magneto attacks Alcatraz?

Magneto attacks Alcatraz Island in X-Men: The Last Stand.

The film’s climax takes place at the San Francisco island, where Worthington Labs is developing the mutant cure. Magneto leads his Brotherhood of Mutants in an assault on the facility, while the X-Men try to stop him and protect the cure’s creator.

Alcatraz Island is a real location in San Francisco Bay, best known for the former federal penitentiary that operated there from 1934 to 1963. In the film, the island’s prison buildings and surrounding grounds are used as part of the fictional laboratory complex.

This setting is sometimes confused with Liberty Island, the New York location associated with the first X-Men film. Muir Island and Genosha are fictional or fictionalized X-Men locations with different roles in the franchise.