The Museo Nazionale di San Matteo is the most important museum of Pisan painting and sculpture with masterpieces from the 12th to the 16th century. It has the largest collection of ceramic basins in the Mediterranean area, as well as a splendid section dedicated to illuminated manuscripts with examples from the 12th to the 14th century. The collection of stone sculpture includes works from the Middle Ages to the 16th century, including examples from the "Romanesque" period and masterpieces by Nicola Pisano and Donatello. The painting collection is of great importance: more than 200 works from the 12th century onwards by important artists such as Simone Martini (author of the magnificent polyptych). However, the Museum's highlight is undoubtedly the numerous painted wooden crosses, objects of worship and prayer in Tuscan churches and recognised as authentic pearls of the Pisan school.