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

Crumbling ruins mark the site of a couple's grisly murder in the woods.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

This quirky curiosity shop takes its cues from the world's bazaars.

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

Tour the sci-fi-esque reality of governmental disease management.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

A small town garden is dedicated to a psychic dog with the most soulful eyes.

An adorably sweet display of sculpted Precious Moments figurines.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

The ruins of a 19th century shelter run by the Independent Order of Odd Fellows.

A kitschy, creepy St. Louis mainstay.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

This abandoned prison castle has become an imposing gallery of graffiti art.

This defunct, fortress-like prison has been the setting for several movies.

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