Alcatraz Island is a former prison located in San Francisco Bay, California, United States. It was used as a federal prison from 1934 to 1963 and housed some of the most notorious criminals of the 20th century, including Al Capone and George "Machine Gun" Kelly.

Today, Alcatraz Island is a popular tourist destination, attracting over 1.5 million visitors each year. Visitors can take a ferry from San Francisco to the island, where they can take a self-guided audio tour of the prison, see the cells, the dining hall, and other facilities, and learn about the history of this notorious prison.

In addition to the prison, Alcatraz Island is also home to a variety of bird species, including cormorants, gulls, and pelicans, and visitors can enjoy panoramic views of San Francisco Bay, the Golden Gate Bridge, and the surrounding cityscape.