One of the best museums in the city. I've always been interested in the mob stories and how the gangs came about and you don't realize how recent so much of it us. There's this wall from the Valentine's Day Massacre (I think!) that is really chilling but so interesting. I recommend this place to anyone interested in the history of the mob. Only bad note I have is that maybe they should have water dispensers throughout as it takes about 2.5 hours to walk around the whole place. Otherwise it's great so 5 stars from me!