​NIERSTEIN, a village of Germany, in the grand duchy of Hesse-Darmstadt, 'on the left bank of the Rhine, 8 m. S. from Mainz by the railway to Worms. Pop. (1905) 4445. It contains a Roman Catholic and a Protestant church, an old Roman bath-Sironabad-and sulphur springs. It is famous for its wines, in which a large export trade is done. Nierstein was originally a Roman settlement, and was a royal residence under the Carolingian rulers. Later it passed from the emperor to the elector palatine of the Rhine.