This hidden green space is the city's second largest conservatory.

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

Dictionary Johnson’s favorite feline.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

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

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

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

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

A clock designed to run with perfect accuracy for 10,000 years.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

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

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

A cluttered and astounding collection of antiquities and curiosities.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

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

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

The curios of pharmacist and collector Henry Wellcome.

A student driver's nightmare.

A hands-off space for graffiti artists to hone and display their skills.

An unusual round church in London with a Templar past.