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

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The largest and most well-preserved petroglyph site in the Verde Valley.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

There are eight natural springs around town, each with a slightly different taste.

The wreckage of a World War II bomber is hidden high in the Colorado wilderness.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

Abandoned silver mine strewn with wrecked and twisted structures.

When ecosystems collide in the arid Southwest.

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.

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

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

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

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

One of the largest Buddhist stupas in North America is built of concrete designed to last 1,000 years.