The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

When ecosystems collide in the arid Southwest.

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

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.

This naturally-sourced hot spring is now home to a clothing-optional resort.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The last Americana on Route 66.

A museum dedicated to a sea that should have never been.

Floating man-made island and upscale restaurant.

In the middle of the desert, miles from any human life, sat an anomalous pay phone that still magically answers your calls.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

The stately birthplace of California's statehood.

This 19th-century museum inside of a lighthouse is only accessible during low tide.

Downieville's largest Gold Rush structure still standing has one of the longest bars in California.

The first privately-owned space capsule to orbit and land carried a secret payload: a wheel of Le Brouère.

Erroneously called the world's tallest flagpole, this landmark is devoted to "good neighborliness."

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

A museum dedicated to restoring vintage aircraft, located at a working airport.

Windswept and remote, this island was once the home of a rare mammoth and today is home to a rare tree.