This unique rock formation is quite the local celebrity, although one day it may come crashing down.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

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

A small but immensely extravagant palace built by the "Night King."

When the rain falls, this drain system turns into a musical instrument.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Started as a kitchen garden, now the second largest botanical garden in the world.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

France's most famous cemetery, with some of its most curious tombs.

One part local history, 99 parts gruesome haunted house.

One of England's most famous churches hides a pair of little known architectural treasures.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

A subterranean house of worship carved right out of the bedrock.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

This stunning mass of ice spans 121 square miles and is still growing.

Sloth rehabilitation center in the jungle of Costa Rica.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

Why is there a vintage Rolls Royce in this Buddhist temple?

This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.