The fading, forgotten remains of a once bright and booming factory.

Rumors of the occult haunt this upscale 1920s hotel.

Eyam took steps to quarantine themselves and keep the plague from spreading.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

A tunnel with windows, so you don't miss out on the impressive views.

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

Once a bustling cotton factory, this early 20th-century building is now home to a thriving artspace.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

A mysterious echo seems to defy the laws of acoustics.

An acoustic anomaly with a mysterious cause.

Many of Edinburgh's more unsavory characters spent their final days behind this door while awaiting their executions.

Sleep in a glass pod dangling off a cliff.

A lonely beacon, precariously perched atop a remote sliver of rock.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

A unique collection of Science Fiction, Fantasy, and everything in-between.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.