第 2 季 共 9 集
播出时间：2018年3月21日
第 1 集 Armageddon Highway
播出时间：2018年3月21日
A strange Cuban prison, an eerie escape route built for Armageddon, and an underwater marvel that changed history are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 2 集 Curse of the Haunted Prison
播出时间：2018年3月28日
A mysterious American pyramid built out of Cold War paranoia, a haunted prison, and a cluster of structures in the Atlantic are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 3 集 Arctic Hell Pit
播出时间：2018年4月4日
Traces of a Russian hole to hell in the Arctic, a military base in America's wild west, and a strange looming tower are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 4 集 Desert Ghost Fort
播出时间：2018年4月11日
A secret Russian military base in the Gobi Desert, a strange complex in an American wasteland, and a relic high atop a mountain are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 5 集 Conspiracy on Devil's Mountain
播出时间：2018年4月18日
A secret structure on a sinister mountain, an industrial compound swallowed by a forest, and a mysterious run in a sand dune are strange deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 6 集 Secrets of the Alien Shrine
播出时间：2018年4月25日
A strange alien shrine on a mountain peak, a bridge built in the Alaskan wilderness, and an American castle with a dangerous secret are mysterious deserted engineering projects. New discoveries reveal how they were built and why they were abandoned.
第 7 集 Amazon Ghost Town
播出时间：2018年5月2日
An American ghost town in the Amazon jungle, a secret Nazi base, and a deadly concrete fortress 866 miles long are mysterious deserted engineering projects, and new discoveries reveal how they were built and why they were abandoned.
第 8 集 Sea Fortress of Doom
播出时间：2018年5月9日
A terrifying sea fortress, a highway in the Amazon that suddenly vanishes, 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.
第 9 集 American Monsters
播出时间：1970年1月2日
America is the home to strange engineering projects that now lie in ruins, and new discoveries reveal how they were built and why they were suddenly abandoned.
