The zoo in Lille is something quite fun to do when in Lille. Admission is free which is awesome…read morefor one thing. There is a cool selection of random animals including porcupines, guinea pigs, monkeys, lamas, and more. My favorite was the peacocks that just walk around zoo wherever they please.
This is not the most amazing zoo of course, but it's fun and somewhere that you can be with locals and not feel like such a tourist.