>>2776293You'll probably have better chances along the french atlantic coast. Here in Germany, most bunkers were converted to other uses (wine cellars, mushroom plantations, extra basements), filled in or modernised for the cold war.
This is the only bunker I'm aware of that's open to the public:
https://www.otterbachabschnitt.de/Haven't been there myself though, since it's a museum. I'm more into the "I know a guy, who knows a guy, who's grandfather stole a key back in 1945" type of bunker.
