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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

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

A sharp bend in a dramatic river canyon cut through red rocks.

This gravity-defying rock formation is one of Big Bend’s natural wonders.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A stretch of highway even lonelier than the so-called "Loneliest Road in America."

US-50 in Nevada is known as "the Loneliest Road in America," but this earlier iteration of the route is even lonelier.

This sign designates the road that leads to the infamous Area 51.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

Mysterious meeting place for UFO hunters near Area 51.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

An eatery for UFO seekers on the Extraterrestrial Highway.

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

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A classic theatre located along a desolate Montana road.

This amazingly preserved Gold Rush town is a historian's dream.

A popular rock that acted as a waymarker for American pioneers.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.