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

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

A museum devoted to the science of color.

This device was crucial to the Industrial Revolution development of Leeds.

The name of this suspended sculpture is Latin for "high horse," which is exactly what it is.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

An artistic melting pot inside an old roadside inn from the Ottoman era.

A two thousand year old brothel uncovered in Northern Greece.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

One of the most photographed locations in the entire city.

An abandoned Byzantine fortress and notorious prison.

A little-known park with unusual, half-ruined structures and a mystical energy.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

This Parisian gem is one of the most incredible ethnographic museums in the world.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.