Château du Bois-Cornillé dates originally from the 13th century, but the current castle was built by Pierre Landais in the late 15th century. It was completely renovated in the 18th century and only the medieval tower survived. The chapel dates from 1721. The park was designed by Eugene Denis Bühler and Édouard André in 1876.
References: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.