Before its closure in 2002, this South Dakota mine was the largest and deepest gold mine in Western Hemisphere.

The Kansas City Barbecue restaurant also contains the original piano that was a central part of the famous "Great Balls of Fire" scene.

This San Diego museum is dedicated to preserving women’s historic achievements.

A hidden courtyard houses early 20th-century plaster masterpieces.

One of the largest trees of its kind in California.

A Biblically-based Natural History Museum.

This historic tower in the California desert promises visitors a "vortex of good vibes".

This vast and otherworldly landscape is one of the largest dune complexes in North America.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

The sea once considered an ecological wasteland is now called "crown jewel of avian biodiversity" by scientists.

World's largest collection devoted to one fruit.

These lush groves of fan palms rise up like oases out of southern California's Colorado Desert.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

The Bong-area park police have asked visitors to please, stop stealing the signs.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

Volo Bog is the only open-water quaking bog in Illinois, and also the southernmost open-water quaking bog in North America to exhibit all stages of bog succession.

On the site of a former Army ammunition plant, bison now roam a restored sea of grass.

This national park dedicated to the tallgrass prairie ecosystem still displays its military past.

The oldest purpose built museum in Illinois, home to original Victorian taxidermy.

A historic and oft-filmed prison stands in a Chicago suburb.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.