Bygdøy Royal Estate Bygdøy kongsgård is located on Bygdøy in Oslo, Norway and is the official summer residence of the King of Norway. The estate originally belonged to the Cistercian monastery on Hovedøya. It was confiscated by the king during the Reformation to supply Akershus castle and garrison. The king would also use the estate for hunting and a hunting lodge was set up by king Christian IV. The current main building was erected in 1733 as a summer residence for governor Christian Rantzau. King Christian Fredrik lived on the estate in 1814 after he was forced to give up the throne and before he left for Denmark. Kings Haakon VII and Olav V also used the estate as a summer residence.