This railroad magnate's 19th century tower is more than a little bit out of place in the Nevada desert.

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

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A spiritual vortex among the red rocks in Sedona.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.

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

A clear blue swimming hole with hidden caves, still unexplored.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

"I did this all while you were watching TV."

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

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Largest man-made excavation on earth!

A unique geological area spiked with wind-carved rocks that resemble teepees.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A sprawling collection of over 106,000 toys from around the world.

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

The ruins of this abandoned fort now stand as a picturesque reminder of America's march West.

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

Legends surround this jagged rock formation in the New Mexico desert.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Oddly shaped rock formation, misassociated with a nearby utopian community.