On the side of a remote mountain, a stone face bearing an inscription of mysterious origin.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

This quirky hot springs town known to locals as "T or C" was named after a radio show.

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

One of the American Southwest's most extensive collections of Navajo rock art.

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

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

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

Colorado's only true geyser is hidden within the San Juan National Forest.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This spectacular track has run continuously since 1882.

An architect in Aspen used psychedelics as his muse while building this mushroom masterpiece.

Toss a Frisbee through the ruins of this Colorado gold mining town.

“You better take care of me Lord, if you don't you're gonna have me on your hands.” ― Hunter S. Thompson, Fear and Loathing in Las Vegas.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

A unique arch graces the Dolores River Canyon near the Hanging Flume.