The only pollutant in the clear blue water is sunscreen.

The land is home to swimming ponies and a legendary 18th-century treasure.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

Every president in history is immortalized in bronze in downtown Rapid City.

A fitting attraction for the corn capital of the world.

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

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.

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

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

This underfoot portrait is the work of a disgruntled painter inspired by a tragic poem.

The clock that sets them all.

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

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

This black shoreline is made up of exploded lava particles.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This blowhole is supposedly caused by a trapped monster.

This former luxury resort in Kaua'i is now an abandoned relic.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The "lovely red Vega" of the legendary record-settling pilot.