The Electoral Palace in Mainz is the former city Residenz of the Prince-elector and Archbishop of Mainz. It is one of the important Renaissance buildings in Germany.
Originally, the Archbishop of Mainz resided at the cathedral, where there is an old private chapel dating from 1137, but in 1475, when the Chapter re-elected Diether von Isenburg, conditions were imposed: he had to surrender the town of Mainz to the Chapter, and erect a castle in the city. The construction of Martinsburg began in 1478 and was completed two years later. For several decades, the archbishops lived either there or in the electoral palace at Aschaffenburg, Schloss Johannisburg. After receiving damage during the second war with the margraves in 1552 the castle was restored in a Renaissance style. Archbishop Daniel Brendel von Homburg built office buildings and St Gangolph's Church around the year 1580.
The building of a new palace commenced in 1627 on the behest of Archbishop Georg Friedrich von Greiffenklau. The Rhine wing of the new palace could not be finished until 1678, construction being delayed by the Thirty Years War and the War of the Grand Alliance. The original plan is not known, but it was probably a four-wing construction, comparable to the 1604 repairs to Schloss Johannisberg. It can be assumed Martinsburg remained standing only because of the delays.
The north wing was begun in 1687, ready by 1752, and furnished in succeeding years. Work on the wing extending away from the river was begun during the reigns of Johann Friedrich Karl von Ostein (1743–1763) and Friedrich Karl Josef von Erthal (1774–1802).
During World War II, the building was heavily damaged, especially in the air raid of 27 February 1945, which destroyed most of the city. Of the palace, only the exterior walls remained. It was rebuilt during 1948 and 1949.
Stylistically, the Electoral Palace is one of the last examples of German Renaissance architecture. The northern wing, built later, conforms to this style. The exterior, with turrets at every corner, is richly decorated, particularly around the windows. The roofs have been restored with exactness. The most spectacular interiors included the Grand Staircase by the leading Baroque architect Balthasar Neumann, which was removed during the French occupation.
Today the east wing houses the Römisch-Germanisches Zentralmuseum. An assortment of replicas and valuable original items presents a comprehensive picture of the cultural life of prehistoric times, of the Roman Empire, and of the early Middle Ages. The north wing contains the famous function hall from which the annual Mainz carnival TV show Mainz bleibt Mainz, wie es singt und lacht is broadcast. The Electoral Palace is now one of eight venues managed by Congress Centrum Mainz. There are seven halls and many smaller rooms, enabling events to be staged for up to 1,700 persons.
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.