A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A community gathering place that once housed half-ton tanks and the World's Fair.

"The Reptile Man's" very own roadside zoo features an albino alligator.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Experience a charming 1930's version of "infotainment."

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

A picture-perfect town, perfect for blowing up.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

"Only the devil could play golf here."

Quite simply the largest tree in the world (by volume).

This hidden fire lookout offers spectacular views of Sequoia National Park.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

A reproduction of earth's many biomes.

This mountain tram provides stunning views while hanging from a single, steel thread.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The crumbling ruins of this southern American fort have survived storms, war, and cults.

The crumbling remains of a 19th century fortess.

A winding, cliffside stretch of road overlooking the Delaware River.