Rhineland-Palatinate ( RYNE-land pə-LAT-in-it, -lənd-, US also -in-ayt; German: Rheinland-Pfalz [ˈʁaɪnlant ˈpfalts] ; Luxembourgish: Rheinland-Pfalz [ˈʀɑɪnlɑm ˈpfɑlts]; Palatine German: Rhoilond-Palz) is a western state of Germany. It covers 19,846 km2 (7,663 sq mi) and has about 4.05 million residents. It is the ninth largest and sixth most populous of the sixteen states. Mainz is the capital and largest city. Other cities are Ludwigshafen am Rhein, Koblenz, Trier, Kaiserslautern, Worms, and Neuwied.
https://en.wikipedia.org/wiki/Rhineland-Palatinate