These jagged limestone blades cut out through the canopy of the jungles of Borneo.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

These fantastically named natural pools look like something out of a Scottish myth.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This stunning mountain lake was named for a pair of tragic lovers whose statues stand at the center.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

A miniature train-ride through Slovenia's largest cave system.

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

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

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

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

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

Cave on extinct volcano, once home to famous mathematician Pythagoras.

This ancient hydrological marvel is now the base of a modern outdoor cinema.