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

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

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

This East End pub gained notoriety as the site where gangster Ronnie Kray publicly shot a rival.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

This nondescript building hides an entrance to an underground nuclear tunnel system.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

The world's most elegant power lines.

An eerie collection of the surviving structures from a past celebration of the future.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

A 16th-century Andalusian palace.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The world's largest wooden structure.

Is there such thing as too many fruit bats? Not anymore.

The curios of pharmacist and collector Henry Wellcome.

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

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

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

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

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

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