This unique Renaissance castle was turned into a home for Nazi occultism.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

Monasteries on rock pillars, once accessible only by frayed ropes.

Ancient Greek oracle of the dead.

The hallucinogenic center of the ancient world.

A former plague hospital turned medical museum.

One of the best collections of wax anatomical models in the world.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

Contains some of the world's more disturbing wax anatomical models.

A curious collection dedicated to human and animal anatomy and pathology.

Medical history with an amazing, if frighting, collection of wax diseases on display.

Venice's "Island of the Mad."

This former insane asylum now holds a pathological anatomy museum.

A tomb with a window to ensure the interred wasn't buried alive.

A preserved building where the dead were once watched for signs of life.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

The second oldest continuously operating bar in Louisiana.

Australia's largest medical museum featuring a 19th-century pharmacy.

Eighteen miniature death-scene dioramas.

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

Dilapidated ruins that once treated a notorious young serial killer, currently hosting vandals, squatters, and ghost hunters.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.