Le Tripostal

Splashed with street-art murals, this cavernous red-brick postal sorting center was transformed into an arts center in 2004, when Lille was the European Capital of Culture. Changing art and photography exhibitions (most free) usually feature the work of local artists; there's also a bar, a canteen-style restaurant, a kids' play area and a design shop. Look out too for events such as DJ sets, live music gigs and workshops.