An out-of-place slice of France, smack in the middle of Shanghai.

This ratty natural history collection is a charming relic among a city rushing into modernity.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Hear the quietest sound from across the dome.

Public access to clean drinking water was an instant hit among the masses.

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

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

This historic London residence was once the womb of Scientology.

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.

One part local history, 99 parts gruesome haunted house.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

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

The broken skateboards that became a poignant memorial to a murdered skater.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

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

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

London's smallest police station is barely the size of a phone booth.

When the imprisoned pope's remains were finally returned to the Vatican, his heart stayed behind in France.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

The fantastic architectural models of a French traveler.