History

Schleswig’s diocesan foundation in 947 places the cathedral within the Ottonian-era Christianisation of the Danish-Saxon border region, a frontier zone whose earlier missionary church at Haithabu, one of the most significant Viking Age trading towns in northern Europe, situates Schleswig at a genuinely ancient crossroads of Scandinavian and Continental European history predating the present cathedral by nearly three centuries. The building’s long, interrupted construction history — a Romanesque start in 1134, a tower collapse in 1275 forcing a High Gothic rebuild of the choir, and continued Late Gothic expansion through 1408 and beyond — reflects the kind of multi-generational, repeatedly modified building campaign typical of major medieval cathedrals, whose final form typically synthesises several centuries of shifting architectural fashion rather than a single coherent design.

The Bordesholm Altarpiece’s journey to Schleswig is itself a specific instance of a broader post-Reformation pattern: as Lutheran territories dissolved Catholic monastic institutions across the 16th and 17th centuries, valuable devotional artworks originally commissioned for suppressed religious houses were frequently relocated to surviving parish or cathedral churches rather than destroyed, preserving major works of Catholic-era religious art within newly Protestant institutional settings. Duke Christian Albrecht of Holstein-Gottorp’s 1666 decision to move Brüggemann’s altarpiece from the dissolved Bordesholm priory to Schleswig Cathedral exemplifies this pattern precisely, and the altarpiece’s subsequent 19th-century restoration — notably involving a young Emil Nolde, later one of German Expressionism’s most significant painters, before his own artistic career had developed — adds a further, more recent layer of documented craftsmanship history to the object.