Crime-thriller fans should make a trip to this small museum in lush Wan Chai Gap. The protagonist in this former police station is the Hong Kong police force, formed in 1844, but the real stars are the Triads (ie Hong Kong Mafia). The eye-opening Triad Societies Gallery uncovers their secret rituals. Equally intriguing are the well-supplied Narcotics Gallery and the historical account of Kowloon Walled City. Kids will enjoy the weaponry display.

If taking the bus, alight at the stop between Stubbs Rd and Peak Rd.