This open-air museum was originally a World War II testing ground for German missiles and rockets.

These massive moving sand dunes have swallowed an entire village and are still on the run.

The world's largest wooden structure.

This small chapel is built of human bones and decorated with a golden skeleton.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

Rare karst landscape eroded from a flat seabed.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A Spanish town built into the cliffs.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

A unique seaside cave where Aleister Crowley faked his own death.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Elaborate tile work in this railway station tells the story of Portugal.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A small Portuguese cottage formed between boulders in the countryside.

A submerged village appears when dam levels drop.

What almost started out as a spite house became an eccentric's found object masterpiece.

Stunning wetlands ablaze with pink lotus flowers.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This man-made mound monument was built out of soil from all across the Polish empire.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

Museum dedicated to "the man who moved the Earth."

The hottest place on the planet.