The Old Lille Stock Exchange is located in the heart of Lille Old Town, next to the Grand Plaza Lille, where many street performers perform. The whole stock exchange is square, square-shaped buildings, ornately decorated and finely carved, showing the richness and commercial prevalence of Lille. In the center of the building is a small square, similar to the patio, there will be many old book stalls or small vendors selling old postcards or old CDs on weekdays here, because they are all very old, some small things in the old years, and they feel particularly interesting after a round, and the price is not expensive. There will be many people playing chess here and so on. Holidays are more fun, every Saturday and Sunday this small square will become a small ballroom, with music, a pair of old and new lovers dancing on the square, dancing waltzes, tango, etc., as if bringing people back to medieval Europe!