Alps–Mediterranean Euroregion
The Alps–Mediterranean Euroregion (transnational co-operation structure) was created on 10 July 2007 between three Italian regions (Piedmont, Liguria and Aosta Valley) and two French regions (Rhône-Alpes and Provence-Alpes-Côte d'Azur). It has an area of about 110,460 km2 and more than 17 million inhabitants.
Source: Wikipedia — Alps–Mediterranean Euroregion (CC BY-SA 4.0)