[2] Wismar quickly became the administrative center of all of Sweden's German possessions when the Royal Swedish Tribunal was set up in the Fürstenhof.

This necessitated a buildup of Wismar's fortifications, an operation that Field Marshal Erik Dahlbergh was appointed to lead.

However, since Sweden had lost several nearby possessions (such as Bremen-Verden) to its rivals, Wismar began to lose significance as it became more of an outpost of Swedish control rather than the center of a larger hub.

The building styles of Sweden mixed with the methods prevalent during Wismar's time in the Hanseatic League to create an architectural theme unique to the Baltic coast of Germany and Poland.

The evidence of this historic style, known as Brick Gothic, in a number of structures led to them receiving the status of UNESCO World Heritage Site in 2002.