Wildenstein Castle's first mention was in 1301, with no understanding to when was it made or by whom. The two towers were built around 1350 and the construction or expansion of the palas was made around 1400. The medieval castle was restored as a Baroque residence in 1640 by Hans Thüring Effinger. The restoration work started in 2012.
The Royal Palace was built in the first half of the 19th century as the Norwegian residence of King Charles III, who also reigned as king of Sweden and otherwise resided there, and is the official residence of the present Norwegian monarch. The crown prince resides at Skaugum in Asker west of Oslo. The palace has 173 rooms.
Until the completion of the Royal Palace, Norwegian royalty resided in Paleet, the magnificent town house in Christiania that the wealthy merchant Bernt Anker bequeathed to the State in 1805 to be used as a royal residence. During the last years of the union with Denmark it was used by the viceroys of Norway, and in 1814 by the first king of independent Norway, Christian Frederick.