This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The largest riverfront opening cave in the Ozarks.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

One of the deepest springs in Missouri.

These pink granite water slides are the result of millions of years of erosion.

Away from the crowds of fishing enthusiasts, take a hike deep into the woods and journey into an eerie darkness.

Another in a long tradition of legends regarding infernal seats.

A subterranean haunt where wine and homemade biscottis are always on the menu.

A mysterious light of unknown origin on the backroads of Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Curious cave that stays a cool 56 degrees all year long.

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

A funhouse dummy that turned out to be a real life mummy, Elmer McCurdy is an urban legend come true.

Circus cemetery for all the “showmen under God’s big top.”

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

The world's only museum devoted solely to the art and collection of action figures.

Nature's biggest mammal swims in landlocked Oklahoma.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

The collection includes seven one-of-a-kind automobiles, vintage fashion, and more.

This general store is a one-stop-shop for workers at the Prudhoe Bay oil field.

The northernmost truck stop in the United States.

This junkyard made over as a theme park is the "Most Alaskan place in Alaska."