The deepest spring in Missouri.

Often referred to as the largest spring in America.

This art deco masterpiece was once a miracle spring mecca but is now simply a government office building.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This mosaic-covered bar is brimming with curated curios.

Some of the best pastries in "the Czech heritage capital of Texas" come from a gas station off I-35.

One of the most acclaimed eateries in Arkansas is a two-table diner on the ground floor of a family home.

This giant steer-skull edifice refuses to die.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

"Polynesia on the Plains."

Taos Pueblo recipes, foraged ingredients, and outdoor ovens define the menu at this eatery.

Hidden on the 7th floor of a historic building, this Cajun spot features wall-to-wall bottles of hot sauce.

Hot Doug's "Hot Dog" Stand.

A onetime gangsters' hideaway where you can dine on steaks, fine wines, and cigars just like they once did.

Chef Lawrence West serves up Indian tacos, wojapi, and other Lakota dishes at the brick-and-mortar incarnation of his popular food truck.

A notorious Route 66 eatery once frequented by Al Capone.

Though it's thrived abroad, this forgotten Dunkin' rival has just one store left in the States.

The Quapaw tribe supplies the meat and produce in this Oklahoma casino restaurant.

This humble hole-in-the-wall is home to an incredible pig ear sandwich and serious civil rights history.

A 200-year-old bar is all that remains of one Mississippi River town's rough-and-tumble past.

This strange example of the Egyptian Revival architecture trend now holds Mardi Gras floats.