An eccentric playboy's astounding natural history collection.

A formerly abandoned mental institute, now back in business.

The site of a tragic massacre that spawned a multimedia franchise.

Beyond the usual stories that attend old prisons, this one has deep bloody undercurrents.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

An abandoned asylum incorporated into a college campus.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This Queens hospital has stood abandoned for almost 20 years after its patients were secretly relocated in the dead of night.

A terrific purveyor of natural history objects and curios.

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

America's first public mental health facility.

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

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