Nouvelle-aquitaine is the largest administrative region in france, renowned for its cultural richness, varied landscapes, world-class wines and charming destinations. Oct 11, 2025nouvelle-aquitaine is the official name of one of the new regions of france which was formed by merging the three former administrative regions of aquitaine, limousin and poitou. Nouvelle-aquitaine is the largest administrative region in france, located in the south-west of the country.