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

The last four extravagant street signs of London's historic banking street.

There's an exclusive Beefeaters pub hidden in the Tower of London.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

This secluded walkway overlooks a magnificently wild London green space.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Two plaques commemorate the site of Shakespeare's first theatre.

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

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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

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

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

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

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

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

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

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

An incarceration museum on the spot of possibly the oldest prison in England.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Hear the quietest sound from across the dome.