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

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

This iconic science fiction house still looks like something from the future.

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

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

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

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

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

Race through the maze, get your name on the sign.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The museum chronicling a treasure hunter's dream, fulfilled.

The island residents are known for taking their quirky sense of humor with them to the grave.

"We Seceded Where Others Failed."

A Circus legend leaves an unexpected endowment.

The only Florida state park with publicly accessible caves.

World's largest magnetic research facility.

The haunting remains of a failed housing development can still be found behind the big box stores that were to anchor them.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

The ruins of a Florida miracle spring resort make it seem like a wonder that this was ever a health spa.

A vision of beautiful Hindu architecture in the middle of the American South.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'