Walk the whole Mississippi River!

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Visit this playground of waterfalls, caves and sinkholes.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Enormous lake at the bottom of a unique cave system.

A diverse, expansive nature preserve in northeastern Kansas.

Stories of sightless fish and ghostly cowboys are only a fraction of the legends surrounding this Kansas sinkhole.

The quirky collection includes treasures like Elvis' underwear, Bob Barker's toothbrush, and hundreds of sock monkeys.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

A wonderful collection of all things Oz is nestled in the heart of Kansas.

World's largest collection of Coke-related items not held by the Coca-Cola company.

A curiosity-seeker's paradise set inside a three-story historic school house.

Visitors to this Kentucky homestead turned museum are immediately transported back to the Antebellum south.

Kentucky's longest operating jail is now a spooky spot to spend the night.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

Thousands of unique minerals, including some of the most impressive fluorite crystals in the world.

Origin of the blue-skinned Fugates of eastern Kentucky.