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:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.