Walking through the historic center, you are bound to come across Piazza Pio II and the Cathedral of the Assunta. Inside, you can find important and remarkable paintings by the most renowned artists of the time, and the beautiful octagonal bell tower that stands above the centuries-old crypt.
In front of the cathedral, you can see the Palazzo Comunale, a historic building dating back to the mid-1400s with its main feature: the large loggiato on the front. Also in the main square is the imposing Palazzo Piccolomini Museum that stands out with its hanging garden from which you can admire a truly unique panorama over the whole Val d'Orcia, from Montalcino to Monte Amiata. To complete the central square, you can visit Palazzo Borgia, home of the Diocesan Museum of Pienza.
Inside the former school of San Carlo, you can find the Archaeological Museum of Pienza, a building of medieval origin, with archaeological and Etruscan collections on display and an exhibition path that documents the urban and architectural history of the Pienza area.
Just a short walk from the historic center will bring you to the Parish Church of Corsignano, a Romanesque church with three naves, whose origins date back to the seventh century.