Neuravensburg Castle was built at the end of the 12th century by the Counts of Argengau, mentioned in 1271, and destroyed in the Peasants' War of 1525. From 1614 to 1617, the castle was reconstructed and expanded into a castle by Abbot Bernhard Müller of the St. Gallen Abbey. In 1836, the castle was sold for demolition, and from 1837 to 1845, it was partially dismantled.
In 1992, the city of Wangen purchased the castle ruins and carried out further restoration work from 1995 to 1996. Besides the keep ruins with a viewing platform, which is accessible from the inside, the foundation walls of the palace are still preserved. The entrance to the castle ruins is located at Hagmühleweg. Following its establishment in 1987, the Neuravensburg Castle and Homeland Association took over the responsibility for the preservation and research of the castle complex.
Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.