Did you visit any outdoor markets in Paris? You should visit Dieppe, too. Dieppe is a picturesque harbour town easily accessible from the ferry port on a courtesy coach which takes all but 5 minutes. Or take your car across from Newhaven port.
Another two worthwhile places to visit is Reims and Ostend. Reims' city has a wonderful underground carpark with courtesy lifts exiting out onto a huge public precinct. There are 3,000 shops in Reims, and some wonderful brasseries.
In October, Ostend in Belgium has a gastronomic week, the Food festival. It really is a must if you like seafood.
Edit:
I have many pictures of Reims taken after a recent business trip. later, once my post count increases suitably, I'll be pleased to share them.
Nightlife in Reims
