Ekensholm Castle is a manor house located in Flen Municipality, in Södermanland County. It is most known for being the residence of the Archduchess of Austria. Ekensholm Castle sits on the northern side of Dunkern lake, and is close to the small towns of Dunker and Hässelby. It is located in Dunker Parish. The current version of the manor was built in 1827 for the Swedish lieutenant and politician Baron Knut Kurck, who was briefly suspected of and arrested for the 1792 murder of King Gustav III of Sweden.
Today, the castle is the home of Count Archibald Douglas and his wife, Walburga Habsburg Douglas. From 2007 to 2008, the equestrian trainer at the manor trained a horse, Salut, for use by the Swedish Royal Guard.
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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.