This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

A miraculous natural phenomenon known as "the spring that breathes."

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

Native Americans built this circle of stones, which was used to predict astronomical events.

The start of the group that straightened the teeth of a nation.

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

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

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

Final resting place of a 19th century gold prospector and convicted cannibal.

Metal water storage tank turned ethereal concert hall.

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

A unique attraction and museum dedicated to exploring iconic roadside structures.

Curios, scientific antiques, oddities for sale.

In a small Japanese garden off a busy Denver street, a memorial to a brave, principled politician.

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

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

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

A tiny nondenominational church harkens back to the days of the first homesteaders in the region.

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

This otherwise unremarkable ski town building marks the site of Butch Cassidy's first robbery.

A prehistoric rock shelter that's literally in someone's backyard.

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