Ok guys, we need to plan a European tour and we need to go HERE.
If you're heading South West you HAVE to go over the Millau Bridge (A75 / E11). I'd also highly recommend Carcassonne once you get to the area
The alternative is to head down more along the coast, in which case La Rochelle is lovely.
Not those dodgy old pics of Carcassonne again LRB!!