See massive fossils that are over 200 million years old in northeastern Arizona.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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

Rippling sand dunes frozen in the Arizona rock.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

A sarcastic monument threatens to curse any "idiot" who dares remove it.

Alaska Natives have lived on this tiny isolated island in the Bering Strait for over 5,000 years.

The site of one of Japan's very few American occupations during World War II still holds the relics of a roundly disastrous campaign.

An auroral research program that superheats the ionosphere.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

One woman's dream became a train hotel in her backyard.

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

Gorgeous cave resemble a winter wonderland.

The king of U.S. high points towers over every other peak on the continent.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

What better place to take a seat?

Cadillac where country's first big star was found dead.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

A wealth of local folk art, antiques, and curios, without ever leaving your car.