The United States's largest hand-dug well is topped with a state-of-the-art museum.

Home to Hollywood history and a very special salt crystal.

Massive still life just off the highway in Kansas.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

Step back in time at this 1950s display home, built to showcase once cutting-edge electric amenities.

Private collection of art inspired by cabinets of curiosity.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

A spooky defunct railroad tunnel now part of a sprawling trail.

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

Dramatic river bend surrounds a natural red-rocked pedestal.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

A world-class collection of mechanical musical instruments and automata.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Whimsical artist house in the New Jersey woods.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

Buffalo's abandoned concrete grain elevators are getting a second life.

A forsaken wonder in the middle of the East Side neighborhood.