In northern France, drive first from Paris to Bayeux to see the Bayeux Tapestry. There are good audioguides for both adults and kids. Going through all the panels of the tapestry is as interesting as reading comic strips! If you have time, the next day check out Mont St. Michel. It’s a great Romanesque monastery on an island! It can be very crowded in the summer, so that’s better for the winter if you can manage it.
The next day, check out nearby Caen. Caen has a great castle with a moat and drawbridge, and plenty of room to play. There’s even a jungle gym inside the castle grounds. Leave time in the afternoon to see the Abbaye aux Hommes and the Abbaye aux Dames, two beautiful Romanesque churches.
Spend the next morning seeing the amazing Normandy cemeteries from World War II. Then recover from all the sadness and spend the afternoon on the beach! The next day, begin a tour of the great cathedrals of northern France. Drive to Rouen and see where the British burned Joan of Arc. From Rouen, make a loop to Amiens, then to Laon. And from there drive to Reims cathedral, where the kings of France were crowned, and back down south to Paris. You’ll want at least two or three days to see all these cathedrals, but it’s so interesting how each one is slightly different from the others.
Cross the Channel to London