Construction of the Lausanne Cathedral began in 1170. Twenty years later another master mason restarted construction until 1215. Finally a third engineer, Jean Cotereel, completed the majority of the existing cathedral including a porch, and two towers, one of which is the current day belfry. The other tower was never completed. The cathedral was consecrated and dedicated to Our Lady in 1275 by Pope Gregory X, Rudolph of Habsburg, and the bishop of Lausanne at the time, Guillaume of Champvent. The medieval architect Villard de Honnecourt drew the rose window of the south transept in his sketchbook in 1270.
The Protestant Reformation, a movement which came from Zurich, significantly affected the Cathedral. In 1536 a new liturgical area was added to the nave and the colourful decorations inside the Cathedral were covered over. Other major restorations occurred later in the 18th and 19th century which were directed by the great French architect, Eugène-Emmanuel Viollet-le-Duc.
During the 20th century major restorations occurred to restore the painted interior decorations as well as to restore a painted portal on the South side of the Cathedral. New organs were installed in 2003.
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.