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

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

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Despite time, colonization, and the brutal New Mexican heat, these Pueblo ruins still stand.

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

A multi-storied adobe complex has been inhabited for more than a thousand years.

When ecosystems collide in the arid Southwest.

This historic church is named for abolitionist Henry Ward Beecher and the ruse to arm his fellow abolitionists.

A diverse, expansive nature preserve in northeastern Kansas.

These elevated trucks were put in place as a middle finger to The Man, but are now considered folk art.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

A unique blue and yellow phone booth in America's "Little Sweden."

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.