Depends what you are interested in. Interesting town, a little tourism, not too much aviation - Laon and a tour around the Somme. A little further - track off down the coast do the Normandy beaches and spend a little money in Deauville (stay in Trouville to save a couple of bob!) Into motor racing - go down to Le Mans. If you have nnot explored much of France take it in easy bites - leave plenty of time to find your accommodation and pick out your restaurant!