The Mob Museum, officially the National Museum of Organized Crime and Law Enforcement, is a history museum located in Downtown Las Vegas, Nevada, United States. Opened on February 14, 2012, the Mob Museum is dedicated to featuring the artifacts, stories, and history of organized crime in the United States, as well as the actions and initiatives by law enforcement to prevent such crimes. The museum is housed in the former Las Vegas Post Office and Courthouse, which was built in 1933 and is listed on the National Register of Historic Places.
https://en.wikipedia.org/wiki/Mob_Museum