After the original Benedictine Abbey on the Altmünster Plateau had been destroyed in 1542, the monks built a new abbey or Neumünster in 1606 in the Grund. This in turn was destroyed by fire in 1684 but was rebuilt on the same site in 1688 and extended in 1720. After the French revolution, it served as a police station and prison before becoming a barracks for the Prussians after Napoleon's defeat in 1815. From 1867, it once again became a state prison. During World War II, the Nazis used the Abbey to imprison political resisters to their occupation of Luxembourg. Among the most notable of those political prisoners was Luxembourg's best-known sculptor Lucien Wercollier.
Today Neumünster Abbey is a public meeting place and cultural centre. Since 1997, it has been the home of the European Institute of Cultural Routes.
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.