Moonbows over Kentucky.

This natural marble cave is one of only five national monuments in Oregon.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

A house carved into a rock in the 1940s.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

An abandoned theme park with a strange and tumultuous past.

The world's longest known cave system.

One of the few surviving "Wigwam"-themed motels.

Abandoned bridge hidden deep in the San Gabriel Mountains.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.

A music-filled, booze-soaked oasis in the desert.

A fake town founded by Western movie stars is now becoming a hip desert community.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The ghost town that ended up on Ebay.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

A desert ghost town—occupied for only 12 years—was once home to more than 500 silver mines.

The unbelievably opulent home built for an infamous newspaperman.