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

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

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

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

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

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

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

This museum inside a museum tells the story of London's timepieces.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

The broken skateboards that became a poignant memorial to a murdered skater.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

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

A quiet memorial to those who died saving others in the heart of the City of London.

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

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

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

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

The cedar tree in Highgate Cemetery earned its title by accident.

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

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