The Champagne hillsides, along with houses and cellars, are a testament to the region's rich history and its pivotal role in the production and commercialization of champagne. Inscribed as a World Heritage Site in 2015, these sites exemplify the development of an agro-industrial enterprise that has achieved international acclaim. The area includes the historic vineyards of Hautvillers, Aÿ, and Mareuil-sur-Aÿ, and the renowned Avenue de Champagne in Épernay, which is lined with the headquarters of many prestigious champagne producers. This recognition by UNESCO underscores the cultural and historical significance of the Champagne region and its enduring legacy in the world of winemaking.