Veneranda Fabbrica del Duomo di Milano
The Veneranda Fabbrica del Duomo di Milano ("Venerable Fabric of the Duomo of Milan") is a 600-year-old organization that was established to supervise the construction of the Cathedral of Milan (the "Duomo"). The organization is still active and involved with the maintenance, preservation, and restoration of the cathedral.
Source: Wikipedia — Veneranda Fabbrica del Duomo di Milano (CC BY-SA 4.0)