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Secrets of the Alien Shrine

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.

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Episode Discussion

tvjjbj12 posted a year ago

Retitled, this episode re-aired as "America's Haunted Castle" on 2/15/2019 at 2100 with a summary of "New discoveries reveal why the world's most ambitious engineering projects were abandoned, unraveling the dark mysteries and bloody secrets of these strange ruins."

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