The Castello di Carlo V was built in 1542 at the behest of the emperor Charles V who commissioned the construction of the architect Gian Giacomo dell'Acaya. The fortress is located in the ancient village of the city of Capua. It has linear geometries and ramparts of a square base and an entrance bridge that rests on arches. Over the centuries the function of the Castle has always remained the defensive function, except during the period of the restoration when it held the role of prison. The castle is not open to the public.
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.