One man's ambition created this psychedelic log home.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

A late-19th century diversion canal built by hand crosses Bryce Canyon National Park and is still in use.

The unusual patterns in this rock formation result from two distinct modes of weathering.

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.

A tunnel with windows, so you don't miss out on the impressive views.

A sharp bend in a dramatic river canyon cut through red rocks.

The location where the iconic movie character declared it was time to go home.

This balancing rock is one of Utah's most unusual geological formations.

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

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

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

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

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

A pair of giant legs paying homage to a poem, a king, and it would seem, socks.

The Grand Canyon of Texas.