St. Catherine's Church is one of the five principal Lutheran churches of Hamburg. The base of its spire, dating from the 13th century, is the second oldest building preserved in the city, after the lighthouse on Neuwerk island. It is situated on an island near what was formerly the southern boundary of the medieval city, opposite the historic harbour area on the Elbe river. It traditionally served as the church of the seamen.
The earliest attestation to the existence of the church dates back to 1256. The main body, consisting of a triple nave, was rebuilt during the mid-15th century in the north German Brick Gothic style. In 1657 a Baroque rooftop was added to the spire, which thus reached a height of 115 meters. The church was heavily damaged in an air-raid during World War II, on 30 July 1943. It left only the outer walls and the base of the spire standing. The building was restored between 1950 and 1957.
St. Catherine's had an organ as early as the late 15th century, and by the 16th century it was considered the most important in Hamburg. This organ was replaced by a new organ built by Hans Stellwagen, rebuilt in 1670 and repaired by Johann Friederich Besser. In 1720, according to Johann Mattheson, this organ consisted of some 58 stops and approximately 88 ranks which may have made it the largest organ in the world at that time.
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.