When flour explodes, it's not a pretty sight.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A unique geological area spiked with wind-carved rocks that resemble teepees.

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

An experimental, automotive replica of Stonehenge.

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.

When ecosystems collide in the arid Southwest.

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

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

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

The largest source of fossilized insects anywhere.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

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

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

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

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

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

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

"All Mountains - All The Time."

Abandoned silver mine strewn with wrecked and twisted structures.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

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