Tucked away in a London Tube station, this 1920s linear clock shows the time across the world all at once.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

This ancient Egyptian obelisk still bears the wounds of World War I.

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.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

The bronze uniforms commemorate the vital role of women during World War II.

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

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.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The London statue that imitates passersby.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

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

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

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

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

A building claimed to be London’s smallest house has an obscure history.

The final resting place to 300 Victorian-era pets hides inside the city park.

This five-star hotel was originally a swanky parking garage.

A luxury hotel constructed out of a former jail.