Gottorf Castle and estate

Gottorf Castle (German: Schloss Gottorf, Low German and Danish: Gottorp) is a castle and estate in the city of Schleswig, Schleswig-Holstein, Germany. It is the ancestral home of the Holstein-Gottorp branch of the House of Oldenburg. It is situated on an island in the Schlei, about 40 km from the Baltic Sea.

It was first settled as an estate in 1161 as the residence of Bishop Occo of Schleswig when his former residence was destroyed. The Danish Duke of Schleswig acquired it through a purchase in 1268, and in 1340 it was transferred to the Count of Holstein at Rendsburg of the House of Schauenburg. The manor later, through maternal inheritance, became the possession of Christian I of Denmark, the first Danish monarch from the House of Oldenburg, in 1459.

Both the island and the structure were extended through the years, and particularly during the 16th century. Frederick I, younger son of Christian I, made it his primary residence. In 1544 the duchies of Schleswig and Holstein were divided in three parts; Frederick's third son Adolf received one of these parts and made his residence at Gottorp. This state became known as the Duchy of Schleswig-Holstein-Gottorp.

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