Wildenburg castle was built between 1202 and 1235 and is one of the few hill castles in the Eifel that has not been destroyed by war or demolition. It was the centre of gravity of a territorial lordship that extended in the west as far as the present border with Belgium and in the east reached the gates of Steinfeld Abbey.
Originally the castle and the village of Wildenburg were separated by a ditch and drawbridge. Today the ditch has been filled in and the drawbridge has disappeared. The castle itself comprises a main and forecastle. The most striking parts of the castle are undoubtedly the towers: the tall tower over the hall, the tower above the gate in the forecastle and the large square tower. The identification of the above towers is difficult, because all the towers visible today are round. The large fortified tower at the southwest corner was probably square at first, but was then reinforced against cannon-fire and rounded off. The so-called tall tower over the hall is today called the Johannisburg. It was bought by Steinfeld Abbey in 1715 and the old inner Palas was converted into a church, in which many wooden sculptures from various centuries are on display. The former staircase-tower became a bell-tower, around which are the gatekeeper's house, the witches' tower and the half-timbered houses of the village.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.