Rheinhessen (in English: Rhenish Hesse) refers to the part of the former Grand Duchy of Hesse-Darmstadt located west of the Rhine river and now part of Rhineland-Palatinate. It is a hilly countryside largely devoted to vineyards. Its larger towns include: Mainz, Worms, Bingen, Alzey, Nieder-Olm and Ingelheim.