How much of Zwift's France map is based on/inspired by real-life routes?

I kinda love a lot of the features in the Zwift France map, and am planning on spending a month this summer in France to ride. Is Ventoux (and Alpe d'Zwift, but that's Watopia) the only part of the map with a real-life analog? I'm specifically wondering what the "Les Intestins" section is based on or inspired by. Gorges du Verdon, maybe?