This amazingly preserved Doric temple was abandoned before it was ever completed.

A study of Fascist era Art Deco design in Italy.

Why a column on the entrance is inscribed with a verse from the Quran is one of Sicily's many mysteries.

Every inch of this chapel is covered in craftsmanship from across the world.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

142 ceramic steps become a mosaic once a year.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A beer pipeline runs beneath Bruges.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

This postmodern apartment block was designed to be a vertical neighborhood.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

A lush indoor jungle fills this bustling Madrid transportation hub.

Electrical pylon in the shape of Disney's beloved mouse.

An abandoned water sports stadium that has become a haven for graffiti and decay.

It turns out that a hurricane-prone beach is probably not the best place to house wild animals.

This shrine to bovine consumption and all things fast food is a slice of culinary history both rare and well done.

An abandoned underground bathroom is now a space for public art.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

The "worst battleship ever built" is enjoying a grand second act, submerged 30 feet in the Gulf of Mexico.

This sidewalk monument honors more than 50 civil rights activists who helped change the face of America.

The 44,000-ton aircraft carrier was purposely sunk to create an artificial reef teeming with life.