This entire town moved to a safe location after it was devastated by an earthquake, but the remains of the original town are still around.

This ghost town in Belgium will lose its street art when it ceases to exist.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

Now a pile of ruins and rubble, this was a lovely mountain town as recently as 1960.

These medieval ruins have survived since the 12th century, even providing shelter from the Nazis.

An Italian hillside ghost town.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

A mecca for India's Jains.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

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

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

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Abandoned medieval hill town.

Stalactites and stalagmites in a beautifully lit cave.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A 16th-century horror show built in a lovely Italian garden.