The construction of St. Sauveur Basilica was commissioned around 1120 by Sir Rivallon le Roux, Lord of Dinan, on his return from the first Crusade. The church was extensively rebuilt and extended during the 15th and 16th centuries and is a successful blend of architectural styles. The lower part of facade is part of the original 12th century building. The bell tower was built during the 18th century to replace the 17th century dome which had been destroyed by lightning.
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.