I know it is still early, but together with my wife we would like to visit France in December 2015, for 2 weeks (first 2 weeks) and would like to check which locations should I base myself in. I will fly in and out of Paris, flying in early so I can go to my primary base on the same day, but I would like to leave the last 6 days for Paris. I was thinking of starting with Lyon, but don't know what the 2nd base location should be. Any help please? We will be using trains. Its important that I can do day trips from these locations with train, may be 1 to 1.5 hours distance. What do you suggest? We mainly like cities, museums and during that time Christmas spirit/activities.