University of Osuna functioned from 1548 until 1824. The building of the former university is significant both architecturally and for its long history as a seat of the university. Its construction was ordered by Don Juan Téllez Girón, founder of the university. The First Duke of Osuna was responsible for numerous buildings in his domain, nearly all of a religious character. The university building is, therefore, particularly notable as an essentially civil building devoted to education.
The buildings erected under the patronage of the First Duke of Osuna are important primarily because of the adoption and diffusion of new stylistic currents and ideas from the Italian architecture of the time. The Renaissance aspects of the buildings are patent, as is the relation to the ideology of humanism in a building expressly created as a center for modern education.
The surviving university building testifies to the Renaissance aesthetics, providing one of the most singular and defining architectural examples of Osuna's past greatness.
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.