There's a good chance you'll utter "Woah" when you clap eyes on Saarpolygon. You'll likely spot this recognizable structure on postcards, but nothing beats seeing it in reality.
This architectural marvel is located in Ensdorf. Once you've done everything you want to at Saarpolygon, consider visiting nearby Voelklingen Ironworks, Westwall Bunker, and Deutsches Zeitungsmuseum.