A well for a well, this anachronistically Indian-styled water pit was built in its small town home in gratitude for a similar favor.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

A hidden tunnel leads to an abandoned slate quarry that's now a secret swimming spot guarded by cliffs.

This Scottish bridge seems to compel dogs to leap to their death.

Built during the Scottish boom in the oil industry, the village was never inhabited.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

A small square plaque marks a failed assassination attempt that could have changed history.

A fearsome dragon clings to a corner of Munich's city hall.

One man's personal kunstkammer, museum and shop.

The footprint of a frustrated devil in Munich's Cathedral.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

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

The remains of the great moral philosopher reside in a university in London.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

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

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

Tombstones and enigmatic inscriptions hide within a vault beneath a popular London arts venue.

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

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A mysterious artist-run cabinet of curiosities and library.

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