Deadly airliner crash preserved for those willing to climb and pay respects.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

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

The top of a giant mesa, just outside of Amarillo, appears to float in the sky above.

A small car graveyard sits in the shadow of the famous Cadillac Ranch.

A natural formation that resembles a camel resting in the New Mexico desert.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

Roaming bison and a spectacular view at the highest point in Nebraska.

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

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

An experimental, automotive replica of Stonehenge.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

World's smallest skyscraper, the product of a remarkable con.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.