Les Halles, the local market. Here you can shop for fresh vegetables or local specialities. Everyone is friendly and helpful, even if you speak hardly any French. You can take a cup of coffee at a much better price than in the touristy cafes in town and soak up the atmosphere. You can even take a cheap glass of wine or sangria after you have done your morning's shopping, and no-one will think you are mad or an alcoholic.