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6 Seasons
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S2 E8 5/8/18

Sea Fortress of Doom

A terrifying sea fortress, a highway in the Amazon that suddenly vanishes, and a mysterious structure in the shadow of the Statue of Liberty are deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.

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Discovery Exploration

Seasons

Episode   1

Armageddon Highway

Episode   2

Curse of the Haunted Prison

Episode   3

Arctic Hell Pit

Episode   4

Desert Ghost Fort

Episode   5

Conspiracy on Devil's Mountain

Episode   6

Secrets of the Alien Shrine

Episode   7

Amazon Ghost Town

Episode   8

Sea Fortress of Doom

Episode   101

Chernobyl's Deadly Secrets