This sacristy, destined for canonical use, was realized thanks to the generosity of Clement XI, who entrusted the project to French masters. The complex was built within the first twenty years of the XVII century.

From the XVIII century until recently, the gold and silver of the “treasures of the Cathedral” have been on display in the closets located in this room. Today elegant and precious liturgical vestments from different moments of the liturgical year are displayed here.

The choir lectern is also displayed in this space. This piece was taken by Federico da Montefeltro during the siege of Volterra in 1472 and placed in his famous library. After the Duchy was taken over by the Papal State in 1631, the lectern was taken to Rome. It was restored to the city of Urbino in 1717 by Pope Clement XI.