We went on the night tour of Alcatraz when we were in San Francisco The most surprising fact was American Indians seized Alcatraz for nineteen months, from 11/20/1969, to 6/11/1971, until the government took it back.
Now, a hidden structure part of the original fortress called a of a caponier has been found sticking out into the bay from the tourist attraction.
We went to a chiefs vs raiders game while we were their and went to the pier, but the coolest thing was still Alcatraz!
Parking is a pain in the rear, but I think it is that way anywhere in SF.
Alcatraz was a fort from 1850 to 1907 and any fortress is buried under the present day prison buildings. I would highly recommend a night tour to anyone traveling to the SF bay area!