I know where there are shops in Arhus, Denmark, Kalmar, Sweden, and in Bath, England. In France the weekly marketplace is a good place to find fabrics. Wish I could help you out with the places you are going to visit. Be sure to tell us all about your adventure. Be safe and have a great time.
P.S. Fabric is MUCH more expensive in Europe unfortunately. But still it is fun to come home with something from far away.