With its brick houses, iron balconies, and narrow cobblestone streets, Vieux Lille, as the French call it, reveals a distinct Flemish flair. Architecture aficionados should stop by Hospice Comtesse and Notre Dame de la Treille. Don't miss Old Lille during the first weekend of September, when you can shop at La Braderie, a gigantic annual flea market that began in the Middle Ages.
