locations: add Koblenz and Mainz (Germany)
Add two cities from Rhineland-Palatinate, Germany. Mainz is the capital city of the state and has a population of ~200,000, Koblenz is the third largest city of the state with a population of ~150,000.
Add two cities from Rhineland-Palatinate, Germany. Mainz is the capital city of the state and has a population of ~200,000, Koblenz is the third largest city of the state with a population of ~150,000.