The Galleria Nazionale d'Arte Antica (GNAA), or National Gallery of Ancient Art, is the main national collection of older (broadly, pre-1800) paintings in Rome. It has two sites: the Palazzo Barberini and the Palazzo Corsini.
The Palazzo Barberini was designed for Pope Urban VIII, a member of the Barberini family, by 16th century Italian architect Carlo Maderno on the old location of Villa Sforza. Its central salon ceiling was decorated by Pietro da Cortona with the visual panegyric of the Allegory of Divine Providence and Barberini Power to glorify the papal Barberini family.
The Palazzo Corsini, formerly known as Palazzo Riario, is a 15th-century palace that was rebuilt in the 18th century by architect Ferdinando Fuga for Cardinal Neri Maria Corsini. For a partial list of artworks, see Palazzo Corsini entry.
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.