Wallraf-Richartz-Museum houses the most extensive collection of medieval Cologne paintings, apart from the Old Pinakothek in Munich, as well as precious works from the time around 1500. Flemish and Dutch masters of the 16th to the 18th century, Rembrandt and Rubens included, are also represented as is a collection of German and French paintings from the beginnings of the modern era until 1900.
The foundations for the museum were laid by Main Attractions 28 the collector Ferdinand Franz Wallraf. The first museum building was constructed in the mid-19th century by the Cologne merchant Johann Heinrich Richartz.
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.