The Diocesan museum of sacred art in Arezzo (also known as MuDAS) 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. The museum exhibits works of art and liturgical items, from the 12th to the 19th centuries, that come from the cathedral and other churches in the diocesan territory, significant for their religious and cultural significance to Arezzo and the surrounding area. Highlights of the museum include several works of Giorgio Vasari and the Pace di Siena. The museum is accessible to the disabled, offers space for teaching, temporary exhibitions, and restoration.