Arezzo is made up of an old upper town and a modern lower town, and is an important center for the production of gold jewelry. Within the old town lie the Duomo, decorated with 16th-century stained glass windows, and the Basilica di San Francesco, containing a highly esteemed cycle of frescoes by Piero della Francesca depicting the Legend of the True Cross. The Piazza Grande is a wonderful Medieval square, famous for its regular antiques market, overlooked by several impressive historic buildings, notably the church of Santa Maria della Pieve and the Loggiato del Vasari, the home Vasari built for himself in 1540.