River City on the Moselle is a term used to refer to two cities in Germany, Metz and TRIER. Metz is a city located in the northeast of France, near the border with Germany, and has a population of around 125, 000 people. It is situated on the banks of the Moselle River and is known for its Gothic architecture. TRIER is a city located in the southwest of Germany, near the border with Luxembourg, and has a population of around 110, 000 people. It is situated on the banks of the Moselle River and is known for its Roman ruins. Both cities are popular tourist destinations due to their rich history and cultural heritage.