Mark Twain once stopped at this rest station during his journey to Nevada.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

Native Americans built this circle of stones, which was used to predict astronomical events.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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

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.

The first declared National Monument in the United States.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

For 60 years, skiers have calmed their nerves with cocktails hidden along these slopes.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

The oldest continuously occupied public building in the United States.

This sculpture perfectly models the molecular structure of a drug that was never produced.

This popular pilgrimage site offers a hole filled with holy healing dirt.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This unassuming layer of clay boasts an out-of-this-world origin story.

A saloon and inn that served the Wild West's most iconic figures—and is still haunted by some of them today.

This highest peak in New Mexico is named after an explorer who had a habit of lending his monicker to peaks.

A natural formation that resembles a camel resting in the New Mexico desert.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A waterfall and cave near Arroyo Seco that inspired the writings of D. H. Lawrence, Willa Cather, and Mabel Dodge Luhan.

The final resting place of the most famous outlaw in the Old West.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.