Oldenburg Castle

Around 1100, a lowland castle was built by the Counts of Oldenburg to secure a trade route. In the 15th century, the complex was expanded into a moated castle with a ring moat. Count Anton Günther began transforming it into a regular four-wing complex in the style of Italian city palaces at the beginning of the 17th century, with master builder Anton Reinhardt and Italian architect Andrea Spezza involved. The project was slowed down by the Thirty Years' War. After Anton Günther's death without legitimate heirs, the territory fell to the Danish royal house, and the castle served as the seat for a Danish governor for over a hundred years.