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The Husum-Schwesing subcamp (German: KZ-Außenlager Husum-Schwesing) in the Schwesing district of Engelsburg, about five kilometres northeast of Husum, became a satellite of Neuengamme concentration camp on 26 September 1944 and was occupied by prisoners in connection with the construction of the so-called Frisian Wall (Friesenwall). Some 2,500 people from 14 countries were incarcerated here in autumn 1944; 297 prisoners died as a result of forced labour, malnutrition and abuse. The camp was closed on 29 December 1944.

Schwesing (Danish: Svesing, North Frisian: Swiasing) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Husum Schwesing Airport (IATA: QHU, ICAO: EDXJ) is a regional airport in Germany. It supports general aviation with no commercial airline service scheduled.

Arlewatt (Danish: Arlevad) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Horstedt (Danish: Horsted, North Frisian: Hoorst) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Wester-Ohrstedt (Danish: Vester Ørsted) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Immenstedt (Danish: Immingsted) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Mildstedt (Danish: Mildsted) is a municipality in the district of Nordfriesland, in Schleswig-Holstein, Germany.

Treene was an Amt ("collective municipality") in the district of Nordfriesland, in Schleswig-Holstein, Germany. It was situated between Husum and the Eider River. Its seat was in Mildstedt. In January 2008, it was merged with the Ämter Friedrichstadt, Nordstrand and Hattstedt to form the Amt Nordsee-Treene. The Amt Treene consisted of the following municipalities:

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:

Ahrenshöft (North Frisian: Oornshaud; Danish: Arnshøft, Arenshøft or Arenshoved) is a municipality in Nordfriesland district, in northern Germany. The municipality covers an area of 8.65 km2. Of the total population of 527, 268 are male, and 259 are female (Dec 31, 2002). The population density of the community is 61 inhabitants per km2.

The Hermann Tast School (German:Hermann-Tast-Schule) is a humanistic high school in Husum. It was founded in 1527 and named after the theologian Hermann Tast (1490–1551), who was born in Husum. Before 1914, it was called the Husum Grammar School (German:Husumer Gelehrtenschule).