The world's first alpine playground (hence the name). Many of the towns on the eastern part of the region have been conquered back and forth between multiple countries so even though the official language is French, you'll probably find some Italian and German in the mix.
The Alps are the setting, I don't know if this area needs more of an explanation, but don't let the big mountains cast too big a shadow on the rest of the area.
Auvergne-Rhône-Alpes official website