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

This wondrous hideaway is suspended in a bamboo forest above a sanctuary for rescued llamas and alpacas.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

This small cemetery is all that remains of Atlanta's first Black communities.

An unusual art exhibition in a suburban yard is designed to awaken the souls of those flowing by.

One-of-a-kind museum inside the first Boeing 747-400 ever made.

This kitschy tavern is also home to rare early editions of "Treasure Island."

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

The largest cemetery in the American Southeast is a hidden gem near the heart of Atlanta.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

A bizarre roadside attraction and the first instance of miniature golf in the world.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Paths are maintained, but trees have taken over plots.

Dedicated to the history of the health sciences.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

Most historians agree that the so-called "Gentleman Pirate" wasn't much of either of those things.

You have to know where to look in this rather ordinary-looking square to find hints of its past as a dissidents' cemetery.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

A memorial to the victims of Argentina's "Dirty War."

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

This beautiful fountain was sculpted by a female artist who was ahead of her time.

A beautiful young girl said to have been buried alive in her coffin…

A gateway to a mysterious network of underground tunnels.