A couple weeks ago a few friends and I visited Alcatraz Island. I've lived in San Francisco seven years and decided I better go now.
Since we were on the night tour they also had some extra programs we could check out. I attended one on Al Capone (I was really fascinated with him in middle school) and a few other friends went to one about Alcatraz and Hollywood. I think it would have been more fun to do the night tour during the winter time, when it gets darker earlier.
Overall it was super fun to do the tour with friends and I highly recommend going at night. Be sure to get tickets a month or two early since those tickets sell out earlier than the day tickets.