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Since before the Duomo was constructed, Opera della Metrpolitana di Siena has been charged with caring for the site. It has taken on many legal forms over the centuries and is currently a non-profit organization.
It preserves and promotes the cathedral complex which includes the physical structure, two museums and artworks from the cathedral and other churches in the diocese. The Picolimini Library is a collection of 10 frescoes depicting events in the life of Pope Pius II. Museu Dell Opera is the oldest private museum in Italy. There is also a Museum of Religious Art. The organization raises funds by charging admission fees.
Piazza Duomo, 8, 53100 Siena, Phone: +39-05-77-28-30-48
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