Freudenburg Castle was built between 1330 and 1337 by John, King of Bohemia and Count of Luxembourg. As part of a castle protectorate between Trier and Luxembourg, it served to secure the road between the cities of Trier and Metz.
During the 15th century the castle fell into disrepair until it was bought by the St. Maximin's Abbey in 1589. They had the castle restored. In a dispute between the abbey and the Archbishop-Elector of Trier; Philipp Christoph von Sötern, the troops of the Archbishop took the castle in 1646 and destroyed it. It was never rebuilt.
Freudenburg Castle was built at the end of a rocky spur. It was separated from the village by a broad dry moat cut out of the rock. Originally a wooden bridge would have given access to the castle from the village. The castle plan follows the outline of the spur, giving it a triangular ground plan.
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.