The overgrown remains of an old rail bridge rise above the valley like ancient Greek ruins.

Solving a 60-year mystery finally gave a name to the young woman known only by the color of her clothes.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

This unique piece of land is home to a patented artificial lake and the remains of an old Girl Scout camp.

An auroral research program that superheats the ionosphere.

Legends surrounding this megalithic tomb range from giants to a dwarf named Trollid.

A collection of colorful dinosaurs hidden in an actual rainforest.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

Faces carved into the cliffs create an otherworldly walking trail.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

This former tuberculosis treatment facility now stands at the center of a public park.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

A homage to the King at the hotel where he revived his career.

A private Las Vegas horse ranch adorned with whimsical artwork.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An enormous illuminated figure dances on the Las Vegas strip.

Temporary Burning Man sculpture made of two 18-wheelers.

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

Wayne Newton's sprawling estate is now open for visitors to catch a glimpse of his "heart and soul."

A collection of haunted objects and macabre oddities under one roof.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

A giant open-air sculpture made of over 200 full-sized boats.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.