The world's largest collection of ship figureheads includes figures from legends and history alike, from Sir Lancelot to Abraham Lincoln.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

An architectural oddity hides in plain sight on this iconic London bridge.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The Great Fire of London and the regulation of one-way streets both started in this alley.

The commemorative stone column conceals a secret laboratory.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

One part local history, 99 parts gruesome haunted house.

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

Pop culture has helped to keep this iconic British building from being destroyed.

A unique tribute to the millions of animals who served and died for the British military.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

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

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

In one of the world's smallest countries, a royal's personal winery is open to the public.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

France's most famous cemetery, with some of its most curious tombs.