An unexpected desert oasis in South America.

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

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.

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.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

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

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

100-year-old shipwreck you can walk up to at low tide.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

The magic's in the hole!

On the Oregon coast there is a natural hole that seems to be draining the sea.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

A sculpture for the sun and stars, created by Nancy Holt.

Come for the speed, leave in love with the desert.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."