For those who like questions better than answers.

Science Channel

An abandoned system of caves was once the meeting place of a secret society that worshiped Satan and performed black magic, and new discoveries at this mysterious site reveal what really happened here and why a founding father was a frequent guest.

Mysteries of the Abandoned

Curse of Satan's Catacombs

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Discovery Plus

A haunted prison that once housed America's most notorious criminals stands in ruin today, and experts reveal evidence of ghostly secrets hidden in the crumbling jailhouse walls.

The Devil's Prison

A vast network of subterranean bunkers in the American west was home to the power to destroy nations, but today, this facility is deserted, and new discoveries reveal why this eerie place was built and why it was abandoned.

Secrets of the Doomsday Caves

Abandoned buildings on a desolate island near Greece provide evidence of a group of people who were forbidden to leave.

Journey to Outcast Island

A mysterious town in South Africa is deserted, even though it was once a booming community; experts reveal the cataclysm that caused the people of this once-prosperous town to suddenly leave and never come back.

Kingdom of the Vanished

A one-time fairytale castle is rumored to be haunted; experts investigate the secrets and ghostly stories of this eerie fortress.

Haunting of Heartbreak Castle

An abandoned town in the Nevada desert is the ruins of an American Atlantis, destroyed by catastrophic floods when the Hoover Dam was built; experts investigate the secrets of this eerie ghost town as water levels recede and the city reemerges.

American Atlantis

At an infamous prison in the Amazon, dangerous criminals faced hard labor, a hostile environment and death by guillotine; today, it's deserted and new discoveries reveal why this hellish compound was built and abandoned.

Jungle of the Damned

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Some of the biggest engineering projects that lie in ruins; cities that are empty ghost towns, bridges that were never finished and roads to nowhere; these deserted places are home to many mysteries and untold secrets.

S5 E2 | American Atlantis

E8 | Curse of Satan's Catacombs

E7 | The Devil's Prison

E6 | Secrets of the Doomsday Caves

E5 | Journey to Outcast Island

E4 | Kingdom of the Vanished

E3 | Haunting of Heartbreak Castle

E2 | American Atlantis

E1 | Jungle of the Damned