This metal tower in the desert provides views of a handful of Nazca geoglyphs.

A Gothic cathedral created from volcanic rocks.

A grassy pyramid named after a French battle.

A curious collection dedicated to human and animal anatomy and pathology.

An unexpected desert oasis in South America.

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

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

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.

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

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.