This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

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

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

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

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

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

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

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.

Its collection includes a broad array of social, geographic, graphic design, and political history.

London's amazing modernist public square that never was.

The commemorative stone column conceals a secret laboratory.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

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

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

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

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

This water-powered cliffside railway is one of the steepest funiculars in the world.

Long before mobile phones or GPS were available, these sentry boxes provided help for motorists in need.