As the Dead Sea continues to deplete, massive sinkholes open along its banks.

A historic, reportedly haunted pub that provided inspiration for several famous adventure novels.

This outcropping was once home to a medieval monastery destroyed during the Ottoman conquest.

A flight of this "ghost staircase" has 40 steps on the way up, but only 39 steps on the way down.

Intensely colorful calcite pools in Southern China.

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.

This giant spider sculpture made from the iconic car is one giant visual pun.

A statue of the owner stands outside of this museum, once the most popular brothel in town.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

A statue erected in honor of the toadish nickname given to Jersey residents by the French.

A passage grave used in neolithic rituals.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

These quaint French houses dangle precariously over a precipice.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Mythical beasts symbolizing the city of Tokyo guard a historic bridge.

A former telephone box found new life as a photo booth and charity fundraiser.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

This precariously perched fortress was once ruled by a crow-worshipping baron.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

This shrine dedicated to a legendary swordsman has become a pilgrimage site for the ill and infirmed.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.