Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A Prada store in the West Texas desert that is never open for business.

Rippling sand dunes frozen in the Arizona rock.

The eroded core of an ancient volcano is now accessible by a short hike.

A geological mystery on Camelback Mountain.

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

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

This narrow canyon has been carved by the river over thousands of years into spectacular and curious forms.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A river runs through this remote valley in a very unexpected way.

Two creeks flow out of either end of this canyon in opposite directions.

The outcropping is graffitied with the name of the beloved musical Muppet television series.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Send a postcard while vacationing with Satan.

Bizarre Cavern.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

One of the oldest living oak trees in the Southeast.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.