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.

Curios, scientific antiques, oddities for sale.

A roadside attraction filled with an astounding array of gloriously wacky vehicles.

When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

A boulder so big and tough, they had to turn it into a landmark.

This museum and former department store is home to the largest collection of A.R. Mitchell art in the world.

Let Ouray’s tallest waterfall sweep your breath away on a dealer’s choice of scenic hikes.

Built in 1981 in collaboration with Andy Warhol, this giant piece of pop art stands on the campus of Colorado State University.

Winter and summer solstice aligned sculpture in the middle of nowhere.

This memorial pays homage to Pueblo's four Medal of Honor recipients.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

This historic stone barn is the former home of legendary cattleman Charles “Lonesome Dove” Goodnight.

The temporary burial site of the man who shot and killed Jesse James.

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

This depiction of the earth mother welcomes new life into Aurora Highlands.

This statue of an obscure comic strip hero stands as a tribute to patriotic service and a cautionary tale about embracing fads.

Once named the “world’s oldest gas station” due to its unusual construction material.

This small piece of railroad history sits behind the parking lot of a chain grocery store.

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

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

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