An abandoned quicksilver mining town surrounded by the Big Bend parks.

At one time, it was the second deepest mine shaft on the planet!

While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

Metal sculpture folk art lining the Kansas Highway.

Once named the “world’s oldest gas station” due to its unusual construction material.

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

The last SR-71 ever constructed.

If it wasn’t for an innovative use of quilts during a crisis, the city of Panguitch might not exist today.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

Though it's no longer a functioning train depot, this castle-like structure is an important piece of Oklahoma history.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The overgrown ruins of a once thriving World War I-era copper mine.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

This replica of the Greek structure is in the heart of Nashville.

A frozen oasis lies beneath the scorching New Mexico desert.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

The last intact steam engine factory in the United States.

The simple gravesite of a Romany clan leader is dotted with offerings, including cans of her favorite drink, Crush orange soda.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

It's where the final scene of the beloved Tom Hanks movie was filmed.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

A stockpile of childhood lunch pails turned collectibles.

This century-old painting of a portly 10-foot-tall man spent years hidden behind plaster.

This mid-19th-century dugout was once home to a Swedish family as they erected their homestead.