A short tunnel built straight through a magmatic dike.

This shrine is an ode to the region's rich Hispanic heritage.

A multicolored mineral mound dribbles piping hot spring water right off the side of a highway.

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

Take a self-guided tour through one of Colorado's most elevated mining districts.

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

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

This Colorado fire station has been in continuous operation for more than a century.

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

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

This nearly abandoned town was once a thriving mining community until a series of fires.

A river runs through this remote valley in a very unexpected way.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

The highest peak in Utah is the hardest to reach, but only if explorers choose the hard way.

Georgia's highest point was given its strange name thanks to a simple translation error.

See just what life was like in a 19th-century prospecting town.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

The shortest river in America flows for just 201 feet.

Home to a timed geyser created by complete accident.

This small canyon park was once the main street of Silver City—until a flood washed it away.

Step back in time at an outdoor living history museum where New Mexico's cultural traditions come alive.

Spectacular 300-foot cliffs in a lush mountain canyon.