We're actually putting together last-minute plans to visit the D-Day 60th Anniversary in Normandy, France. Read more about the events. Also, there's a good map of the area.
We're driving (with the kids) and it will probably take 8-10 hours (in reasonable traffic). I hope to avoid Paris (tolls, traffic, etc.) I can't think of anything more worthwhile - to give the kids something to remember regarding World War II and Meshell's father, William Marion Palmer, who had a handful of combat jumps (with 101st Airborne, I believe) in the area.