I saw this on the news, where kids with ASBO's are allowed free into the museum where they can see what punishment they would have had (usually death) if they had committed their crimes a few hundred years ago. The idea is meant to put them off whatever crime they may consider to commit in the future.
Which is a load of bollocks. The best way to deter kids from crime, IMO, is to show them around current - not past - correctional facilities ie prison and detention centres. Once they see how shit it is to be inside, maybe then they will think twice. Similarly, if you want to quit smoking, just have a walk around the lung cancer ward of your local hospital.