Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

Hear the quietest sound from across the dome.

The curios of pharmacist and collector Henry Wellcome.

The largest of London's subterranean rivers and once a mad, bad center of London life.

The taxidermied remains of a once-great parrot.

A plaque marks the underground site of one of London's "lost rivers."

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

The remains of the great moral philosopher reside in a university in London.

An unusual round church in London with a Templar past.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

A cluttered and astounding collection of antiquities and curiosities.

The anatomical-pathological collection of a man who changed surgery.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This luxury shopping lane has been protected by its own tiny police force for over a century.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

Former abode of notable poet, complete with literary references and stories of ghosts.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

The 340-year-old house that inspired the classic Nathaniel Hawthorne novel.

The hill that gave the Massachusett tribe, and later the state, its name.

The homestead of American patriot John Adams.