Niedermunster Abbey, situated at the foot of Mount Saint Odile was founded around 700 AAD by Saint Odile of Alsace, who was also the first Abbess.
Until the end of the 12th century, the two abbeys formed a single institution, but from the beginning of the 13th century, they began to operate as separate establishments. In 1542 the abbey came under the authority of the Great Chapter of Strasbourg Cathedral.
The Abbey buildings of which the ruins are still visible today were built between 1150 and 1180 AD. The Abbey was seriously damaged during the Peasants' War in 1525 and again by two fires, in 1542 and 1572. The nuns abandoned the abbey in 1545 and it was never reoccupied.
The site was then used, up until the 19th century, as a quarry for other buildings, including the adjacent farm.
For several centuries the abbey was known for its relics, the head and arm of Saint Lazarus of Marseille. When the abbey was burnt down these were transferred to Andlau, eventually disappearing during the French Revolution.
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.