Diocesan Museum of Sacred Art (Arezzo)
The Diocesan Museum of Sacred Art (MuDAS) (Italian: Museo diocesano di arte sacra) in Arezzo was founded in 1963 but opened regularly to the public only in 1985, and was housed in several rooms above the sacristy of the Cathedral of San Donato. In 2011 it was relocated to the first floor of the bishop's residence.
Source: Wikipedia — Diocesan Museum of Sacred Art (Arezzo) (CC BY-SA 4.0)