An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

An abandoned town is hidden in Great Smoky Mountains National Park.

The small cave that housed Tennessee's "first citizen."

This historic train station has been converted to a locomotive themed hotel.

A reclusive Memphis neighborhood is home to decades worth of misunderstood Masonic folk art.

Elvis's own personal tropical hideaway.

A delightful park featuring homemade scale replicas of dinosaurs, tucked away in the Tennessee mountains.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

The first full-scale tunnel built in America is short but scenic.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Home to drunken tower-climbing goats... seriously.

Walk the whole Mississippi River!

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

Mile-long cave system near Great Smoky Mountains.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Railroad came. People came. Railroad left. Town died.

More than five miles of underground passageways.

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.

The secret city built by the Manhattan Project.