Secret Nazi Ruins: A Secret Canal (U&Yesterday, Wednesday, June 25, 2025)

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Secret Nazi Ruins begins its fourth season on Wednesday, June 25, at 8:00 PM GMT on U&Yesterday. The first episode, A Secret Canal, takes viewers to East Prussia to investigate a long-abandoned waterway, resurrected under Nazi Germany’s ascendant power. The central question: what was the true, sinister aim behind this vast construction project?

The series has a history of digging into the hidden architectural remnants of the Third Reich, and this outing is no different. Experts will dissect the structures, their makeup, and technical design, trying to piece together a story that extends beyond simple infrastructure. The goal here is to connect the physical remains with the broader, often unsettling, goals of the Nazi regime.

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Secret Nazi Ruins continues its quest to find clues about Hitler’s unrealized plots. This episode looks to provide insight into how even something as seemingly mundane as a canal could be twisted to serve darker purposes, leaving behind a subtle, yet enduring, footprint of a regime with global ambitions.

The show airs Wednesday, June 25, at 8:00 PM GMT on U&Yesterday.

Isabelle aka Izzy Jacobs is the features editor at memorabletv.com. Isabelle is particularly drawn to crime dramas, but she also has a not so secret love for all things reality TV. In addition to her work at memorabletv.com, Isabelle is also an avid traveler and a devoted foodie.