What to see in the city of Lille, France

I had not seen much of France outside of Paris. I'm so glad I got to see Lille when I visited Brussels (via a short bus journey). The French people were so kind and I loved the sights around the city like Citadelle de Lille, the Grand Palace, the Sacred Heart of Jesus Catholic Church, the park of Jardin Vauban, Saint Maurice Catholic Church, and Bloom Cafe. This last place is a must see cozy spot!