The Wednesday and Saturday morning market on the Place des Lices is one of the best reasons to visit Vannes. The large square fills up from early morning with stalls selling Breton produce: oysters from the Gulf of Morbihan, salted butter from the Guérande marshes, farmhouse cheeses, artichokes and tomatoes from local market gardens, Breton cider and far breton (a dense Breton prune tart). There are crêpe stalls, charcuterie sellers, and a flower market.
The market winds down by around one, and by that point the cafés around the square are filling fast. It's worth getting there by nine to see it at its most animated and have the best pick of the produce. The covered market hall on the edge of the square operates daily for meat and dairy.