This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

Huge stone depressions which may have acted as an Incan agricultural experiment.

An unexpected desert oasis in South America.

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

A market for witches is hidden within a train station.

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

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

This well held a sacred source of water supposedly unleashed from the barren rocks by a wizard-like archbishop.

Hundreds of mummies in a silent room, some with eerily pained expressions preserved on their faces.

The world's largest wooden structure.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

In a city of wooden houses, this watchtower was vital for early fire detection.

A stoic sculpture that overlooks the waters.

This solitary convex mirror sculpture at an abandoned ferry station at the edge of a fjord reflects the scenery back at the viewer.

A stunning architectural yet functional feat, towering over Oslo.

This floating sculpture of ice is a poignant reminder of nature's power.

The painter of "The Scream" is laid to rest under a stoic bust of himself in the humble corner of an Oslo cemetery.

Norway's oldest cathedral still in use.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.