The flea market at Place du Jeu de Balle, also known as the “Old Market” (the “Vieux Marché” in French), is located in the heart of the Marolles district in Brussels, and is certainly the most famous flea market in Belgium’s capital city: 450 merchants work there every day of the year – this flea market is for professional sellers only. Built in 1853, along with the nearby rue Blaes, the Place du Jeu de..