 Geisingen is referenced (spelled variously as 'Chisincs' and 'Gisinga') in deeds dated in the years 724 and 829 recorded in the monastery of St. Gallen, Switzerland, and as such is attested as one of the oldest towns in the region.The town is on the right (here, the northern) bank of the Danube at the eastern edge of a plateau known as the Baar.Where the valley of the Danube leads out of town to the east, the altitude is 2162 feet.