Twisted buildings adorn the banks of the Rhine river.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

This "floating railway" is one of the world's oldest monorail systems.

This painted Lego bridge is the product of over a century of locomotive history.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

An unexpected ghost village lurks on the southeast coast of Tenerife.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A plaque marks the former home of Käthe Paulus, an aerial acrobat who invented the modern folding parachute.

An eerie, derelict amusement park in Berlin.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

France's most famous cemetery, with some of its most curious tombs.

The world's first motorway was used as a racetrack until the late 1990s.

A plaque on the side of a building is a small tribute to the woman who invented an iconic Berlin fast food.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Art installations, derelict railcars, and endangered grasshoppers all call this south Berlin park home.

This monumental work of art symbolizes the coming together of a previously divided city.