The best museum I have ever been too! This place is packed with so much information on all the Mobs it can easily take a whole day to go through each floor and read everything! They have a lot of items that actually belonged to some of the most notorious mob bosses as well as stuff from the actual crime scenes and evidence from where some of the mobs members were murdered. This place is just amazing...I can go on and on about how much i saw and what i saw but I dont want to give away all the good parts! Take your time in this place as it will take you a while to read all the info and see all the displays, exhibits, and videos they have for you. The best $20 I have spent in Vegas ever! Stop reading Yelp reviews and just go see for yourself, you wont be disappointed!