The Cathedral: the cathedral was built on the remains of the Romanesque church of St. Mary (still visible in the crypt). The façade is typical of the Renaissance and is divided into three parts by arched columns. On the left wing there is an octagonal, cuspidate bell tower that is reminiscent of the ones Pope Pius II saw in Germany. Works of art in the cathedral include five altar paintings from the Sienese School. There is also a baptistery next to the apse of the church.
Piazza Pio II: the square rebuilt by Rossellino is flanked by the cathedral and three palaces: one for the government, one for the bishop and one for Pope Pius II. Pienza is the only Renaissance town centre in Italy to have survived the centuries perfectly intact.
Palazzo Piccolomini: this is Rossellino's masterpiece and has a three-arched loggia on the ground floor facing the cathedral with the council chamber above it.
Palazzo Borgia (Palazzo Vescovile): given by Pius II to Cardinal Rodrigo Borgia (the future Pope Alexander VI), it is home to the Diocesan museum. The collection includes local textile work as well as religious artefacts.
Palazzo Comunale: the town hall is the most recent of the buildings on the piazza, with its ample loggia and façade decorated with a scratched plaster technique and a brick tower, which was built later. It also has a brick bell tower, which is shorter than the cathedral’s to symbolize the superior power of the Church.