Wikipedia
                    Nordsee-Treene
                    
                        
                
                                                                    Nordsee-Treene is an Amt ("collective municipality") in the district of Nordfriesland, in Schleswig-Holstein, Germany. Its seat is in Mildstedt. It was formed on 1 January 2008 from the former Ämter Friedrichstadt (except the town Friedrichstadt), Hattstedt, Nordstrand and Treene.
The Amt Nordsee-Treene consists of the following municipalities:
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- Arlewatt
 - Drage
 - Elisabeth-Sophien-Koog
 - Fresendelf
 - Hattstedt
 - Hattstedtermarsch
 - Horstedt
 - Hude
 - Koldenbüttel
 
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- Mildstedt
 - Nordstrand
 - Oldersbek
 - Olderup
 - Ostenfeld
 - Ramstedt
 - Rantrum
 - Schwabstedt
 - Seeth
 
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- Simonsberg
 - Süderhöft
 - Südermarsch
 - Uelvesbüll
 - Winnert
 - Wisch
 - Wittbek
 - Witzwort
 - Wobbenbüll