thumb|Location of Mainz-Kostheim
Mainz-Kostheim () is a district administered by the city of Wiesbaden, Germany. Its population is 14,381 (). Mainz-Kostheim was formerly a district of the city of Mainz, until the public administration by the city of Wiesbaden 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 river.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).