Aix-en-Provence a UFO in 1981 that is taken seriously by GEIPAN, the department within the French Space Agency responsible for investigating aerospace phenomena. Aix-en-Provence is officially twinned with the following seven cities (in alphabetical order): In addition, Aix has international cooperations, partnerships and exchanges with the following cities from all over the world: Aix-en-Provence was the birthplace of: Aix-en-Provence Aix-en-Provence (; , ; ), or simply Aix (; medieval Occitan "Aics"), is a city-commune in the south of France, about north of Marseille. A former capital of Provence, it is in the region of Provence-Alpes-Côte d'Azur, in the department of Bouches-du-Rhône,
Alpes-de-Haute-Provence the population, 32.8% of available housing in the department are second homes. The department of Alpes-de-Haute-Provence is one of the least densely populated of France with barely more than 20 inhabitants per km. The population is concentrated mainly in the valleys of the Durance, the Bléone (up to Digne) and the nearby flat lands. The rest of the department is sparsely populated (less than 10 inhabitants per km over most of the territory). Half of the Communes have less than 200 inhabitants, 17 communes have less than 50 and many villages have been abandoned. The towns are small: only Digne-les-Bains