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

In the middle of a suburban Denver neighborhood is a cave that once provided solace for a prominent Ute chief and his family.

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

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

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

When ecosystems collide in the arid Southwest.

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

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A technicolor place of worship for Elevationists.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Over 600 acres of idyllic open grassland honor Nebraska’s georgic storyteller.

America's largest man-made forest was planted in an effort to bring back the past.

Roaming bison and a spectacular view at the highest point in Nebraska.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This erect, phallic geological spire wasn't always named so domestically.

The farm toy capital of the world hosts a museum filled with toy tractors dating back to the late 1800s.

This remote island in Iowa was abandoned after being devastated by flood.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A bronze plaque marks the site of the only show the "King of the Soul Singers" ever missed.

A curious sculpture garden and museum in Cochrane, Wisconsin.

A lovely hidden waterfall right off the highway is well worth a stop.