Gelnhausen is a town and the capital of the Main-Kinzig-Kreis, in Hesse, Germany. It is located approximately 40 kilometers east of Frankfurt am Main, between the Vogelsberg mountains and the Spessart range at the river Kinzig. According to the Institut Géographique National since 1 January 2007 the geographic centre of the European Union is exactly located on a wheat field outside the town at 50°10?21?N 9°9?0?E.
For a number of years, the town was home to the United States Army's Coleman Kaserne base. In 1996, the town hosted the 36th Hessentag state festival