A set of tall pillars and alcove-like rooms that are significant to the Miami people of Indiana.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

The chiseled jaw of this forgotten American hero still stands tall in a small Indiana town.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This memorial to the Mercury Seven astronaut stands at the site of his former elementary school.

The only freestanding table rock formation east of the Mississippi.

On the grounds of this study, Lew Wallace composed "Ben-Hur: A Tale of the Christ" and many other works.

The first spinning jail built in the United States is the only one that still turns.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!

The 40-year-old machine serves soda quicker than you can catch it for a mere 75 cents a pop.

This grave in a ghost town cemetery marks the death of a witch on a day that never happened.

The overgrown remains of one of the premier auto-racing speedways in the Midwest—and also one of the most deadly.

The world's largest squirrel statue clutches a pecan bigger than your head.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Three hundred years of preserved Spanish colonial history in San Antonio.

Often referred to as the largest spring in America.

In a grove of fast growing walnut trees outside Paris, Illinois, a marker shares the story of a fictional road building culture.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

One man's vision and a labor of love of many.

A former department store turned into a quirky restaurant.

This cave was hidden for thousands of years, storing the worldly goods of ancient Native Americans.

Singing sand that stands as the final remains of an ancient lake.

This Old West eatery along America's Loneliest Road was originally a stop on the Pony Express.