The Sassi di Matera are an example of an eco-sustainable urban agglomeration. In addition to collecting the water conveyed in the tanks, in the dry season the excavated cavities work during the night as atmospheric humidity aspirators that condenses in the terminal cistern of the hypogea. Among the dwellings of the Sassi, not infrequently it is possible to see the ventilation grids in tufa decorated admirably: the rose windows. BG ARTE rosettes have innumerable shapes and some are inspired by the rosettes of important churches in the world. Beyond their primary function these rosettes can also be used as furnishing accessories.