The settlement of Titamanninga was first mentioned about 790 AD, then a possession of St Peter's Abbey, Salzburg. After the Archbishops of Salzbug had achieved immediate status in the late 13th century, Tittmoning Castle was built as a border fortress against the incursions by the Dukes of Bavaria. The episcopal administrator of the castle and its environs was called burgrave, as was Ulrich von Wispeck in 1282. Tittmoning was occupied by the forces of the German king Louis the Bavarian during his conflict with the papacy in 1324; nevertheless, he restored it to the Salzburg archbishops three years later.
Temporarily given in pawn to Bavaria, the unlucky Prince-Archbishop Wolf Dietrich Raitenau had to cede the castle to the Bavarian duke Maximilian I in 1611; it was repurchased by his successor Archbishop Mark Sittich von Hohenems and rebuilt as a hunting lodge according to plans designed by Santino Solari. By the 17th century the castle had finally lost its character of a fortress and became the summer residence of the Prince-Archbishops. Upon the Congress of Vienna, the Rupertiwinkel region finally fell to the Kingdom of Bavaria and Tittimoning Castle, damaged by French troops during the Napoleonic Wars, passed under state-ownership.
In the early years of World War II the castle was used as a prisoner-of-war camp for officers, Oflag VII-D. British and American citizens were also interned there. Today Tittmoning castle is a museum.
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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.