When visiting San Francisco, don't miss a tour of the world famous and notorious Alcatraz Island prison. Tickets to Alcatraz Island are available in combination with our San Francisco Hop-On Hop-Off bus tours. The ferry to Alcatraz departs from Pier 33 1/2 near Fisherman's Wharf and Pier 39. Alcatraz tickets include the award winning audio tour of the prison cell-block. Alcatraz tours sell out far in advance so we recommend you book early.