The London Dungeon

This is not so much a museum as a dark (and sometimes gruesome) reproduction of all things that illustrate the darker side of European history. Located in the County Hall, with ghastly sounds seeping through the front door, this is a sort of haunted house for all. It has won the Best Unusual Venue tourism award several times in the past. Wander through rooms depicting royal executions, vicious murders, various torture and execution devices, and even the Great Fire of London in 1666. The addition of Hollywood-style sound effects and lighting is also a nice touch. Be warned, however, that it is probably not suitable for the fainthearted, and all children must be accompanied by an adult.