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Small museum, main exhibit is the 1968-built German cold war era submarine U11. Everything is in German, but even if you don't speak the language: the main attraction here is exploring the different sections of the narrow U-boat.
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Glambæk castle ruins
Sad remains of a castle that was destroyed in the Thirty Years War. Only the moat and some brick walls are left today.
Peter-Wiepert-Museum
Museum about local geology, crafts, cultural history, and seafaring.
Tropical aquarium with sharks, mangroves, corals and a big underwater tunnel you can walk through.
Jachen Flünk
Windmill built in 1787 turned into a museum.