Where Is Alcatraz?By: Nico Medina, Who HQ Illustrator: David Groff Series: Where Is? Escape from the ordinary and break into Alcatraz, America's most famous prison! The island of Alcatraz has always been a place that's fascinated visitors, from the Native American tribes who believed it was home to evil spirits to the Spanish explorers who discovered the island. In modern times, it was a federal prison for only 29 years, but now draws over a million visitors each year.