What to see and do in Lille in 2 days?

Hi everyone, I’m spending two days in Lille. Any places you’d recommend? I was thinking of visiting Vieux Lille, which I’ve been told about. Would you have any shops, museums, or typical restaurants to suggest for a great time?

Thanks! Have a nice day

Old Lille, of course, the Museum of Fine Arts, the Old Stock Exchange, the belfry, the citadel. Near Lille, La Piscine and the Manufacture Museum in Roubaix (accessible by metro… if it’s working!). A bit further away, the Louvre-Lens in Lens;