The highest point in Belgium is a staircase to nowhere.

Hiding the longest subterranean river known in the world.

Cozy basement bar sports an inventory of over 2,000 beers.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

Former hunting lodge of a duke who was an avid collector of impressionist works.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Abandoned railway line circling the city of Paris.

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

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

The Uros people live on floating reed islands in lake Titicaca.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

It took 82 years and four different plaques to finally get the story right.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

These ruined Incan mausoleum towers still bear carvings of sacred animals on their blocks.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Astronomical observatory above Lake Titicaca.

Death road of Bolivia.