Plan on taking my family of four(adults) to London and Paris for Christmas, and was wondering if there are any suggestions for seeing, doing ect. while London shuts down for Christmas day and boxing day? I notice that many of the museum are closed for those days. We also will be in Paris for new years eve returning to us on the new years day. Any suggestion? from those of you that might have been there during these times.? We have been to each on several occasions but still enjoy the "stamdards" I look forward for responses.