Marktbreit am Main () is a town in the district of Kitzingen in the Regierungsbezirk Unterfranken in Bavaria, Germany. It is situated at the most southern point of the Main river. Marktbreit is the birthplace of Alois Alzheimer who first identified the symptoms of what is now known as Alzheimer's disease. With its suburb , Marktbreit has around 3,700 inhabitants. Geography Location The town of Marktbreit is located in the district of Kitzingen, in the Lower Franconia region of Bavaria. Its territory lies on the left bank of the Main river, at the river's southernmost bend. The town of Kitzingen lies upriver, while downriver are Ochsenfurt and Würzburg. Marktbreit is located on the southwestern edge of the district, where it borders on the districts of Neustadt (Aisch)-Bad Windsheim and Würzburg. Subdivisions The town has two Stadtteile: Marktbreit and Gnodstadt. Neighbouring communities The municipality borders on (from the north clockwise): Marktsteft, Obernbreit, Martinsheim, Oberickelsheim, Ochsenfurt, Frickenhausen am Main and Segnitz. History Roman settlement Near Markbreit, the site of a large Roman legionary fortress (or castrum legionarium) known locally as the Römerlager Marktbreit, was discovered in 1985 and celebrated as a minor scientific sensation because it was never suspected that a legionary fortress was built so far northeast in enemy territory. It was built in Augustan times in enemy territory beyond the "Limes" frontier in preparation for an invasion of the rest of Germany. It was identified on aerial photos in 1985, and archaeologists were active in 1986-1992. The palisade (2¼ km long, using 21,000 trees) appeared to be finished and several buildings were complete. The surface area of 37 ha suggested that the base was built for two legions or one legion and many auxiliary troops. There were no traces of actual occupation and it took some time to conclude that this was not the result of erosion, but from the fact that the base had been prepared but was never used. The headquarters (praetorium), the residences of three centurions, store rooms (horrea), and kilns had already been finished before the settlement was abandoned. There are no traces of violence, and precious objects appear to have been taken away, which suggests that the Marktbreit castrum was evacuated when strategic realities had changed and made it unnecessary. However, a rebellion in Pannonia delayed the execution of the invasion plan, and the defeat of Varus in the Teutoburg Forest put an end to