It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

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

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The curiosities and wonders of pharmacy in a delightful historic building.

All that's left of the quintessential "cabin in the woods."

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Home of an evil witch famous within southern folklore.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A toxic ghost town sitting atop a massive coal fire.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

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

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

The highest point in Washington state is a volcano covered in glaciers.

This family driveway also serves as the highest point in Illinois.

This sanctuary is home to donkeys who finally get to rest after a life of toil.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

This massive complex is made up of hundreds of smaller temples that date back to the ninth century.

Beautiful natural falls where Satan once ruined a pot of beans.