This remote research station sits amid the second-largest ice sheet on the planet.

A surprisingly beautiful abandoned World War II military base in East Greenland.

A Belle Epoque bordello turned into a themed love hotel.

An abandoned beach resort in Normandy reclaimed by artists.

A unique military outpost carved into a rocky outcrop in the English Channel.

These rustic holiday homes are made from discarded fishing boat hulls.

Half a century after it was abandoned, this ghost town is coming back to life.

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

These colorful French islands spent a stint bootlegging booze during American Prohibition.

Old vessels have been transformed into artistic canvases in this unusual cemetery.

The ruins of a medieval castle linked to the murderous French lord that inspired the famous legend of Bluebeard.

Fighting the British and making game shows for over 150 years.

This otherworldly French waterfall looks like its waters have turned to stone.

The deserted pirate-themed restaurant still entices explorers.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

The encased skull that is widely believed to belong to St. John the Baptist.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

A Gothic cathedral created from volcanic rocks.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

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