Could this grave be the true resting place of legendary gunfighter "Doc" Holliday? Unclear.

A humid oasis combines recreation with exploration in a unique underwater cavern.

A graveyard of bathyspheres and diving bells paints a weirdly accurate account of ocean exploration's rickety history.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Every January 6, young men dive into Spring Bayou in search of a cross and a year's worth of maritime blessings.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

The culprit who accidentally lit this 3,500-year-old tree on fire stated "I can't believe I burned down a tree older than Jesus."

Hundreds of skulls and bones at the largest skeleton museum in the country.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

An abandoned bait shop with a front lot filled with storage boxes.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

An impressive collection is dedicated to the legendary beast.

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

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

Visit this playground of waterfalls, caves and sinkholes.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A historic coal mine that doubles as a museum and tourist attraction.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

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

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.