UNESCO designated the Routes of Santiago de Compostela in France as a World Heritage Site in December 1998. The routes pass through the following regions of France: Aquitaine, Auvergne, Basse-Normandie, Bourgogne, Centre, Champagne-Ardenne, Ile-de-France, Languedoc-Roussillon, Limousin, Midi-Pyrénées, Picardie, Poitou-Charentes, and Provence-Alpes-Côte d'Azur. UNESCO cites the routes' role in "religious and cultural exchange", the development of "specialized edifices" along the routes, and their "exceptional witness to the power and influence of Christian faith among people of all classes and countries in Europe during the Middle Ages".