I've been through the one in Bremerhaven. You can walk through it. It costs about €6 if memory serves me rightly: http://en.m.wikipedia.org/wiki/German_submari

I've been through the one in Bremerhaven. You can walk through it. It costs about €6 if memory serves me rightly: http://en.m.wikipedia.org/wiki/German_submarine_Wilhelm_Bauer http://en.m.wikipedia.org/wiki/German_submarine_Wilhelm_Baue...