This Colorado hiking trail provides a small gold mine of abandoned gold mines.

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

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

This spectacular track has run continuously since 1882.

When ecosystems collide in the arid Southwest.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

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

The largest self-built castle in the U.S., six decades in the making.

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

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

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.

A century-old miner's quarters turned mansion.

Stock up on all your horror paraphernalia at this year-round Halloween emporium.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

The Grand Canyon’s original airport, which once welcomed pilots like Amelia Earhart and Charles Lindbergh, lies abandoned.

A historic hydroelectric power plant serves as the unusual backdrop for a public park.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

These petroglyphs created by ancient Arizonians have withstood centuries of exposure to the elements.

Previously a hot spring, this park remains a site of unique history, wildlife, and geology.

An excursion train traverses a picturesque red-rock canyon along the Verde River.