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

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

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

A remarkable geological formation resembling a forest made of stone.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

The stones of this formerly witch-obsessed castle were used to build a church.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.