The Archbishop's Palace is a castle and palace in the city of Trondheim, located just south of the Nidaros Cathedral. For hundreds of years, the castle was the seat, residence and administrative center of the Archbishop of Nidaros.
The castle is one of the largest medieval stone structures in Scandinavia and the oldest walls are likely from the 13th century. The Archbishops of Nidaros expanded the castle gradually, with great halls and residential areas being built over time. Norway’s last Archbishop, Olav Engelbrektsson, attempted to make a final stand and defend the castle during the Reformation but eventually fled into exile.
After the abolishment of Roman Catholicism, the castle became royal property where the local lensherre resided. The castle was restored, rebuilt into a residential palace and eventually used more for military purposes, again being expanded considerably. After the Sovereignty Act of 1660, the castle became the seat and residence of the Amtmann.
Today, the castle has several museums, is frequently used by the Church of Norway and is also the venue of Olavsfestdagene. The Regalia of Norway have been kept in the western flank of the castle at various times since 1826, but have been on permanent display in the castle since 2006.
'The Armoury' (Rustkammeret) is a Norwegian army museum as well as a resistance museum, emphasizing the military history of Trøndelag. Military equipment of Norway during World War II at display in the 'Armoury' Army Museum in Trondheim. The museum has weapons, uniforms and other artifacts on display, starting with the Viking Age, going through the Middle Ages and the Norwegian union with Denmark (1380–1814) and later with Sweden (1814–1905), up to the German occupation of Norway during World War II (1940–1945).
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.