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

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

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

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

A stealthy Apache hideaway that became the haunting site of a mass grave.

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

Curios, scientific antiques, oddities for sale.

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

A mural of the Virgin of Guadalupe painted on the rock wall by canyon's religious namesake.

Inside this casino, visitors are treated to slot machines and a rare German Christmas pyramid.

After being lost for nearly a century, this historic bell finally returned home after its mysterious theft.

The home of a formerly enslaved man who went on to become a prospector, entrepreneur, and activist for Black rights.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

Historic, 19th-century wagon wheel ruts cut into soft volcanic ash.

One man's love for East Coast diner culture brought an entire eatery all the way from New Jersey to Colorado.

Central City celebrates its most famous madam by racing beds down Main Street.

The remains of a World War II-era Japanese American internment camp dot a windswept Colorado hill.

Antique automobiles, phonographs, organs, and farm equipment.

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

Unlike most arches, this geological oddity formed in a volcanic dike.

A seven-story 1920s mausoleum outside Denver houses thousands of remains.

This interpretive path lets you get up close and personal with dinosaur bones.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.