The Dordogne is lovely - lots of nice villages, castles on hilltops, markets, and scenery 'a plenty'. Start there - and then spend the next thirty years going to all the other lovely places in France. There are so many - the Alps, the Riviera, the Pyrenees, the Tarn Gorges, the Ardeche, the Auvergne, and so many others - you could keep going back year after year and still find lovely places to visit.