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

The Grand Canyon of Texas.

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

The remnants of a creative early method of wildfire prevention.

"A hideous albatross in the Hudson River Valley."

A monument to the Mohawk people stands along an old Native American trade route.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

A tiny village in Upstate New York ushered in the precursor to drive-in movies.

The small burial plot is located in a mall parking lot.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

Twenty-year effort to raise a castle using tools and techniques from the 13th century is now abandoned in the Arkansas woods.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

Eight whimsical acres of metal art.

Jail from the 19th century that was built by inmates.

Home to the deepest rift anywhere on Earth.

An Idaho legend carved out a cave village with his own two hands.

See just what life was like in a 19th-century prospecting town.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

A few dilapidated structures are all that remain of this deserted former silver mining town.

Birdhouses, peacocks, animal sculptures, and a graveyard are all found along this eclectic nature trail.

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

This dockworkers' lunch joint has been left leaning by a century of storm floods.