The Landes de Gascogne, or Gascony Moors, is a natural region of France of nearly 14,000 km2 (5,400 sq mi). It extends over three departments: Gironde, Landes and Lot-et-Garonne, and includes 386 communes. The region is a flat, sandy plain in the west of the Aquitaine Basin beside the Atlantic Ocean. The interior is cut off from the sea by a barrier of dunes. It is dominated by pine forests that cover 66% of the territory, with islets of agriculture over 18% of the territory.

Nouvelle-Aquitaine is the largest administrative region in France by area, spanning the west and southwest of Metropolitan France. The region was created in 2014 by the merging of Aquitaine, Limousin, and Poitou-Charentes in a territorial reform. Nouvelle-Aquitaine has an area of 84,035.7 km2 (32,446.4 sq mi) – more than 1⁄7 of Metropolitan France – and has a population of 6,033,952 as of 2020. The new region was established on 1 January 2016, following the regional elections in December 2015.