Sci Ch - Secret Nazi Ruins Series 1 Part 6 Hitlers Invisible City (2019)

Secret Nazi Ruins Series 1 Part 6 Hitlers Invisible City

As the Soviet Army pushes the Nazis out of Poland, they discover a massive city of a thousand buildings that was unknown to the Allies, and using the latest science, experts reveal how Hitler was able to keep this sinister place hidden for so long.

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