The original cathedral of Arras, constructed between 1030 and 1396, was one of the most beautiful Gothic structures in northern France, until it was destroyed in the French Revolution. The cathedral was the resting place of Louis de Bourbon, Légitimé de France, illegitimate son of Louis XIV and Louise de La Vallière.
In 1833 the church of the former St. Vaast's Abbey was rebuilt in classical style as a replacement cathedral. The design was chosen by the former abbot of St. Vaast's, the Cardinal de Rohan, and is of remarkable simplicity. Arras Cathedral was destroyed by shelling in April 1917, during the run-up to the Nivelle offensives of World War I. It was subsequently rebuilt in its previous form.
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.