I am a big wine, food, art and history fan, so I would recommend Burgundy, Bordeaux, Lyon, Provence and Carcassonne and Nimes.
I loved Burgundy not only for the wines, but the towns of Beaune and Dijon are beautiful: small, quaint, walkable and filled with beautiful architecture, history and food. The same can be said of Bordeaux. Renting a bike, or simply driving, through the vineyards is really a lifelong memory for me.
I love Lyon: it's the 3rd largest French City (about 600K) and has some components that you love about Paris: great architecture, a fine Museum of Fine Arts, [two] beautiful rivers running through the city providing great views, beautiful parks/gardens (Tete d'Or), some of the best food in the world, a gorgeous church at the top of a hill like Sacre Coeur (Notre Dame d'Fourviere) plus an ancient Roman amphitheater right down town.
In Provence, Avignon and Aix en Provence are both musts: again great food, quaint neighborhoods, the Pont du Gard, nice museums, great wine, and a ton of charm.
Nimes and Arles are great because of all the Roman ruins (Maison Carree, the Roman Arena, et al), the wine, sunshine/weather, architecture, etc.
Finally, Carcassonne is great because it is a complete, walled Medieval City preserved in its original state. It is such a sight to see it lit up at night.