After 1945, the representative residence of the Pomeranian Dukes was reconstructed from the period of the building's splendour - the late Gothic south wing and the Renaissance architecture of the wings encompassing the courtyards - based on a comprehensive analysis of archival cartographic and iconographic material. Prior to developing the designs for the reconstruction of the castle with the reconstruction of the artistically valuable fragments, multifaceted inventory and scientific research was carried out, and successive versions of the functional layout were developed, adapted to the changing requirements and decisions of the authorities and institutions supervising the restoration of the historic appearance of the most important building in Western Pomerania. Szczecin was the unofficial capital of the Duchy of Pomerania, the extinction of the Gryfit dynasty took place in 1637. The plans for the rebuilding of the castle did not envisage reflecting the successive stages of rebuilding the ducal residence that occurred after the loss of independence of Pomerania and after the administration of Szczecin was taken over by the Kingdoms of Sweden (mid 17th century) and Prussia (early 18th century). During the period when Szczecin belonged to the Scandinavian dynasty, plans were made to significantly rebuild the castle. The Prussian authorities undertook extensive construction work to transform the former ducal residence into a building adapted, among other things, to the needs of the new administration and garrison (the dilapidated Renaissance forms were replaced with mansard roofs and schematic Baroque decorations, characteristic of the Friedrich period). Fragments of the grandiose decorations were demolished, radically transforming the architecture of the castle from the period of the Pomeranian Duchy reflecting the tradition of the Slavic Griffin dynasty.