Wallerstein is a municipality and former principality in the district of Donau-Ries in Bavaria in Germany.
It was first mentioned in 1238 as Steinheim. For generations ruled by the House of Oettingen-Wallerstein, in 1806 Wallerstein became part of the Kingdom of Bavaria by the process of mediatisation. The family still owns the Wallerstein Castle and its surrounding land.
Wikipedia https://en.wikipedia.org/wiki/Wallerstein,_Bavaria
Coordinates 48°53'13.472" N 10°28'33.73" E
