Liège, a city along the Meuse River in Belgium’s French-speaking Wallonia region, has long been a commercial and cultural hub. Its old town is filled with landmarks dating to the medieval era, including the Romanesque Church of St. Bartholomew. The Grand Curtius museum houses archaeological treasures and art within a 17th-century mansion, while Opéra Royal de Wallonie has staged operas since 1820.