Mainz-Kostheim () is a district administered by the city of

Wiesbaden Wiesbaden (; ) is the capital of the German state of Hesse, and the second-largest Hessian city after Frankfurt am Main. With around 283,000 inhabitants, it is List of cities in Germany by population, Germany's 24th-largest city. Wiesbaden form ...

, Germany. Its population is 14,381 (). Mainz-Kostheim was formerly a district of the city of

Mainz Mainz (; #Names and etymology, see below) is the capital and largest city of the German state of Rhineland-Palatinate, and with around 223,000 inhabitants, it is List of cities in Germany by population, Germany's 35th-largest city. It lies in ...

, until the public administration by the city of

was decided on 10 August 1945. The reason for this had been the easy control of the Allied Occupation Zones in Germany, where the Rhine formed the border between the American sector and the French sector. Mainz-Kostheim faces the city of Mainz on the opposite shore of the

Rhine The Rhine ( ) is one of the List of rivers of Europe, major rivers in Europe. The river begins in the Swiss canton of Graubünden in the southeastern Swiss Alps. It forms part of the Swiss-Liechtenstein border, then part of the Austria–Swit ...

river. In 1184

Frederick I, Holy Roman Emperor Frederick Barbarossa (December 1122 – 10 June 1190), also known as Frederick I (; ), was the Holy Roman Emperor from 1155 until his death in 1190. He was elected King of Germany in Frankfurt am Main, Frankfurt on 4 March 1152 and crowned in Aa ...

held one of the biggest diets of the Middle Ages at the Maaraue in Kostheim, the Diet of Pentecost. Occasion had been the promotion to Knighthood of is both sons Henry hand Frederic,

Duke of Swabia The Dukes of Swabia were the rulers of the Duchy of Swabia during the Middle Ages. Swabia was one of the five stem duchy, stem duchies of the medieval German kingdom, and its dukes were thus among the most powerful magnates of Germany. The most no ...

. During the Siege of Mainz by Prussian and Austrian troops in the

Napoleonic Wars {{Infobox military conflict , conflict = Napoleonic Wars , partof = the French Revolutionary and Napoleonic Wars , image = Napoleonic Wars (revision).jpg , caption = Left to right, top to bottom:Battl ...

Kostheim had been severely damaged several times. In the cause of the bombing of Mainz in World War II Mainz-Kostheim was subject to air raids. The Linde Group has been located in Kostheim before recent mergers, acquisitions and transition.

Twin towns – sister cities

Mainz-Kostheim is twinned with: * Sankt Veit an der Glan, Austria

References

Boroughs of Wiesbaden Divided cities Former boroughs of Mainz Rheingau Populated places on the Main basin {{Hesse-geo-stub