The Moselle is a river flowing through France, Luxembourg, and Germany. It is a left tributary of the Rhine, joining the Rhine at Koblenz. A small part of Belgium is also drained by the Mosel through the Our. Its name comes from the Latin Mosella, meaning the "Little Meuse" (Mosa in Latin). The river gave its name to two French départements: Moselle and Meurthe-et-Moselle.
The source of the Moselle is at the western slope of the Ballon d'Alsace in the Vosges mountains. The Moselle flows through the Lorraine region, west of the Vosges. Further downstream, in Germany, the Moselle valley forms the division between the Eifel and Hunsrück mountain regions. Its total length from source to mouth is approximately 546 km.
The Moselle valley is famous for its beautiful scenery and the excellent wine produced. Most well-known is the German Mosel wine region, while the Luxembourgish winegrowing region is called Moselle Luxembourgeoise and the French region is called VDQS Moselle. Most notable among the wines produced here are Riesling, Elbling, Müller-Thurgau, Kerner, and Auxerrois. The German part of the Moselle is a popular tourist destination. An important asset is today's Moselradweg, the 311 km (193 mi) long cycleway from Metz to Koblenz, which also connects to nine other cycleways.
- Château de Meinsberg (dit de Malbrouck): near Manderen, this castle was built in the 15th century but rebuilt in the 1990s. Today it is used for numerous cultural events.
- Château Fort du Sierck-les-Bains: situated just on the French-German border at Sierck-les-Bains, this fortress of the Duke of Lorraine dates back to the 11th century. Most of today's castle was constructed in the 18th century, following plans from Vauban.
- Schloss Berg: a Renaissance castle at Nennig, today a hotel and a casino.
- Alte Burg: a manor house built in 1360 at Longuich. One of the few surviving manor houses in rural Rhineland-Palatinate.
The Moselle was celebrated in Mosella, a Latin poem by Ausonius (4th century). In the 20th century, the river and the folklore and local history of the towns along its banks were described by British travel writer Roger Pilkington. In the tale, "The Seven Swabians" of the Brothers Grimm, the eponymous Swabians drown trying to cross the Moselle.