Shanghai Public Security Museum

This offbeat and macabre museum over three floors details how the Chinese authorities keep control. Display cases depict the illicit activities local cops have encountered, the equipment police use to aid their work and the punishments given for such crimes. On display are tasers, lots of guns (one concealed in a violin case), seized gambling tables, restraining equipment (handcuffs, stocks and shackles), and a model-scale replica of the room in which war criminals were hung, among other eye-opening displays.