Moustiers Sainte Marie France. Moustiers-Sainte-Marie, or simply Moustiers, (Mostiers Santa Maria in Occitan) is a commune in the Alpes-de-Haute-Provence department in southeastern France, a part of the Provence-Alpes-Côte d'Azur region and considered one of the "most beautiful villages of France".It lies at the western entrance to the Gorges du Verdon. The village has been a centre of the pottery trade, especially faïence, for centuries. A spring flows out of the cliff and creates a waterfall in town, providing water power.The village was built on platform terraces a hundred or so metres up the side of a limestone cliff. At twilight when the sun on a clear day strikes the south-facing cliff, a diffuse pink light glows across the village.