Schleswig

Schleswig, city, Schleswig-Holstein Land (state), northern Germany. The city forms a semicircle around the head of the Schlei, a narrow inlet of the Baltic Sea that affords access to small vessels, northwest of Kiel. First mentioned in 804–808 as Sliesthorp (and later as Sliaswich), the town was in the area of Haddeby (ancient Norse: Haithabu), an important Baltic–North Sea trade centre from the 9th to the 11th century. St. Ansgar built the first church there...