Mysteries of the Abandoned

Uncover the secrets of Nazi engineering projects that now lie in ruins. These deserted places are home to extraordinary mysteries and untold secrets, and are revisited to understand how they were built, and why they were abandoned. This episode is a compilation of segments from S01E01, "Nazi Ghost Town", S01E05, "Soviet Doomsday Device", and S01E04, "Wild West Apocalypse".