Rhenish Hesse (dark red), shown within Rhineland-Palatinate (pale red)
Rhenish Hesse (German: Rheinhessen) 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, therefore it is also called the "land of the thousand hills." Its larger towns include: Mainz, Worms, Bingen, Alzey, Nieder-Olm and Ingelheim. Many inhabitants commute to work in Mainz, Wiesbaden, or Frankfurt.
History
At the Congress of Vienna in 1814-15, Louis I, Grand Duke of Hesse, had to give up his Westphalian territories, but was compensated with the district of Rheinhessen on the left bank of the Rhine. Because of this addition, he amended his title to "Grand Duke of Hesse and by Rhine" and the name of the region was created.