The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A naturally mummified 2,000-year-old man.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The television series' iconic giant foot was borrowed from this classical painting.