Province of Schleswig-Holstein

Ellingstedt (Danish: Ellingsted) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

Jübek (Danish: Jydbæk) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

Arensharde (Danish: Arns Herred) is an Amt ("collective municipality") in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany. Its seat is in Silberstedt. It was formed on 1 January 2008 from the former Ämter Schuby and Silberstedt. The Amt Arensharde consists of the following municipalities: Bollingstedt Ellingstedt Hollingstedt Hüsby Jübek Lürschau Schuby Silberstedt Treia

Silberstedt (Danish: Sølvested or historic Sylvested) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany. It is situated approximately 13 km west of Schleswig. Silberstedt is the seat of the Amt ("collective municipality") Arensharde.

Groß Rheide (Danish: Store Rejde) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

The Danevirke or Danework (modern Danish spelling: Dannevirke; in Old Norse; Danavirki, in German; Danewerk, literally meaning earthwork of the Danes) is a system of Danish fortifications in Schleswig-Holstein, Germany. This historically important linear defensive earthwork across the neck of the Cimbrian peninsula was initiated by the Danes in the Nordic Iron Age about AD 650. It was later expanded multiple times during Denmark's Viking Age and High Middle Ages. The Danevirke was last used for military purposes in 1864 during the Second War of Schleswig. The Danevirke consists of several walls, trenches and the Schlei Barrier. The walls stretch for 30 km, from the former Viking trade centre of Hedeby near Schleswig on the Baltic Sea coast in the east to the extensive marshlands in the west of the peninsula. One of the walls (named Østervolden), between the Schlei and Eckernförde inlets, defended the Schwansen peninsula. According to written sources, work on the Danevirke was started by the Danish King Gudfred in 808. Fearing an invasion by the Franks, who had conquered heathen Frisia over the previous 100 years and Old Saxony in 772 to 804, Godfred began work on an enormous structure to defend his realm, separating the Jutland peninsula from the northern extent of the Frankish empire. However, the Danes were also in conflict with the Saxons south of Hedeby during the Nordic Iron Age, and recent archaeological excavations have revealed that the Danevirke was initiated much earlier than King Gudfred's reign, at least as far back as 500 AD and probably well before that. Because of its historical importance and testimony to the defense of trade routes in the Viking Age, the Danevirke and the nearby Viking town of Hedeby were inscribed on the UNESCO World Heritage List in 2018.

Dörpstedt (Danish: Dørpsted) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

Treia (Danish: Treja) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany.

Hollingstedt (Danish: Hollingsted) is a municipality in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany, located on the Treene river.

Schuby was an Amt ("collective municipality") in the district of Schleswig-Flensburg, in Schleswig-Holstein, Germany. The seat of the Amt was in Schuby. In January 2008, it was merged with the Amt Silberstedt to form the Amt Arensharde. The Amt Schuby consisted of the following municipalities: Hüsby Lürschau Schuby

Schuby (Danish: Skovby) is a municipality in the district Schleswig-Flensburg, in Schleswig-Holstein in northern Germany. It is only a few kilometres west from Schleswig. The name comes from the Danish "Skovby", meaning the "Village in the Woods". Schuby is located on the Bundesautobahn 7, from which it has its "own" exit. Schuby is part of the Amt ("collective municipality") Arensharde. The ancestors of Stanford Computer Scientist Donald Knuth emigrated from Schuby.Carles Puigdemont was arrested at a gas station in this town.

The Rheider Au (Danish: Rejde Å or Spangebæk) is a river of Schleswig-Holstein, Germany. The Rheider Au is a tributary of the Treene near Hollingstedt. Its source is on the Geest near Schleswig. In the Viking Age the route Eider - Treene - Rheider Au - Schlei served as a navigation way and/or transport or trade route between places to the north and the Baltic Sea, as commercial centres functioned (see Dorestad, Haithabu).