A solid steel plane designed to catch fire over and over again.

This former steel and coal plant is now a neon-lit industrial fantasia.

The largest mosque in Germany.

This unique sculpture proved invaluable when it saved a train from careening off the tracks.

A condensed piece of China floating in a Dutch harbor.

This colorfully-painted tunnel links two distinct parts of a historic neighborhood.

A nuclear reactor created for Eisenhower's "Atoms for Peace" campaign is now used for research at a Dutch university.

This public toilet built in the famous Amsterdam School architectural style is a Dutch national monument.

A preserved building where the dead were once watched for signs of life.

Rumored to have been frequented by Vincent van Gogh, it's the only remaining genever producer in the Hague.

The largest 19th century panorama in the world still in-situ.

This 2,000-year-old Doric bridge is still open to pedestrian traffic to this day.

One Italian taxi driver covered his entire house in small seashells creating a weird bit of architecture that is preserved to this day.

A unique collection of Science Fiction, Fantasy, and everything in-between.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The world's first floating farm is staffed by one human, three robots, and 35 cows.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

An hour south of Punta Arenas (Chile) along the Strait of Magellan, a Kcymaerxthaere plaque tells the story of Culev Larsze, cursed to live without words in the fictional world of Kcymaerxthaere.

A gorgeous and extensive collaboration between biologists and artists, displaying skeletons and other animal remnants in lifelike poses.

Venice's "Island of the Mad."

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

A former plague hospital turned medical museum.