Canosa 'castle' is actually the acropolis of ancient Castrum Canus. The three great towers are the ruins of the eponymous estate located atop the hill overlooking the valley Ofantina. Originally a place of worship and pre-Roman fort, built of tufa blocks was rebuilt as a bastion of the same materials by the Grimaldi. Last owners, from 1856, were the Prince of Canosa Capece Minutolo of Naples, and remained until 1948. The wear of the blocks that compose it and the color denotes the passage of these various civilizations that have developed the structure in different epochs. The castle has also reported damage after the devastating bombing of the Second World War. Along the steep hill of the Acropolis, there is the old part of the country, with its narrow streets and staircases. At the southern base lie the remains of a Roman amphitheater.
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.