When ecosystems collide in the arid Southwest.

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

Above Breckenridge, a destructive mining technique sits sunken in a small pond.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

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

A hotel with a rich Wild West history of miners and bootleggers.

This spectacular track has run continuously since 1882.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

Two creeks flow out of either end of this canyon in opposite directions.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

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

Even in death, he's still your huckleberry.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

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