The French Great South-West is a geographical, sociological, economic and cultural entity bringing together the administrative regions of Nouvelle-Aquitaine and Occitanie, resulting from the merger on January 1, 2016, of five previous regions; in these two regions combined, it covers 156,000 km2, or 29% of the territory of metropolitan France. It is a grouping devoid of its own political or administrative structures, set up, with the objective of an interregional reflection on spatial planning at the level of new European issues, at the initiative of the Interministerial Delegation at territory planning and regional attractiveness.