This attraction is worth visiting possibly if the weather is bad outside, as it was when I was in the city, and you want to do something fun indoors for a few hours. The Dungeon's are a fun way to learn a little bit about the history of the city, the interesting and alternative parts of the history, which you may not hear on a walking tour. The actors and actress are great, and really get into character, involving the audience and picking on certain members to participate.
Great actors, nice scenery. Yes, I was scared! And it really was so much fun.
Only has English speaking on weekends which is not very useful. Long wait kings even if you have purchased a ticket ahead of time.