This volcanically volatile island town is home to an abandoned series of tunnels left by the Japanese during WWII.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Nicknamed the "Museum of Horrors," this French anatomical collection has been fascinating visitors for over a century.

A curious blend of taxidermy, antique tools, creationism, and a purported antediluvian rock.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

Home of what was the largest hydraulic mine in the world, producing gold and the first diamonds in the U.S.

This hospital once pioneered the use of electroencephalograms, but fell into maltreatment, abuse, and eventual abandonment.

A formerly abandoned mental institute, now back in business.

The decaying ruins of Wales' first asylum for the mentally ill.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

This black shoreline is made up of exploded lava particles.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

This antique prison is a tourist attraction with a sordid past.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

A mysterious find dredged from Louisiana waters.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.