This abandoned cemetery has a dark past of bodies buried over bodies.

A memorial for an outsider theorist who believed that the planet is actually hollow.

A unique home built by Andrew Jackson Caldwell that also served as a military hospital.

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

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

A full-scale replica of a 1774 colonial settlement in Kentucky.

This small museum is kept in a house that was integral to the genesis of Uncle Tom's Cabin.

Outstanding collection of 19th century medical instruments includes a life-size figure cast from as many as 200 cadavers.

A ship that lived many lives under many names is now known merely as the "Ghost Ship."

The world's longest known cave system.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This turn of the century jail once held Charles Manson.

One of the first schools in the U.S. to admit students without regard to race or gender.

Locals dubbed this abandoned abode the "gingerbread house" because of its odd architecture.

The home used in just a few seconds of film that came to define the setting of a hit sitcom.

The body of one of the world's most famous outlaws is covered in cement and iron to prevent it from being stolen.

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

A medical facility that has been kept frozen in time.

This schoolhouse for Black American children is one of the oldest remaining in southeastern Ohio.

This alley-cum-fan gallery in the ex-Nirvana drummer's hometown holds the world's largest drumsticks.