A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

A renovated hotel is bringing new life to a nearly-abandoned mining town in Colorado.

A mental health hospital dating back more than 139 years, now features a museum.

Check out a hidden collection of vintage neon signs.

This enigmatic building features numerous architectural styles.

This super steep hike ascends 2,000 feet in less than a mile.

Inside this casino, visitors are treated to slot machines and a rare German Christmas pyramid.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

When ecosystems collide in the arid Southwest.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

See six states, pickled freaks, rocks, and antiques.

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

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

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

A futuristic hovertrain is parked unceremoniously alongside a nondescript road.

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

Legends surround this jagged rock formation in the New Mexico desert.

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

This memorial pays homage to Pueblo's four Medal of Honor recipients.

The narrow mountain road that carves a path between Florence and Victor is tied to ghost towns and ghost stories.

This razorback ridgeline has doubled as a scenic drive since the early 1900s.

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

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

This three-mile concrete levee in Pueblo, Colorado was transformed into the world’s longest painting.