President Donald Trump announced he wants to reopen Alcatraz, the prison near San Francisco that was featured in prominent movies and held famous criminals. The move was unexpected and shocked many. The prison is a museum and hasn’t been in operation for decades. But Trump wants the prison to “house America’s most ruthless and violent offenders.”

President Donald Trump says he wants Alcatraz to be returned to use as a maximum-security prison. Here's what to know about the infamous prison.