Mysteries of the Abandoned

Alaska's Fort Apocalypse (4x6)

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In Alaska, the ruins of a massive compound point to eerie evidence of an apocalyptic mystery. New discoveries reveal why this strange marvel was built in the snowy wilds of the Last Frontier. Stories: 1) Buckner Building, Whittier, Alaska, USA; 2) Expo '92 Site, Seville, Spain; 3) Siegfried Line, Germany; 4) Red Star Train Graveyard, Budapest, Hungary