Once home of Pius II & the Piccolomini family, it can be visited with a 30 minute guided tour. €3.50, open tuesday to sunday 10:00-12:30 & 3:00-6:00, closed Monday & in the winter.
The office is just up the street from Piazza Pio II, open Monday to Saturday 10:00-1:00 & 3:00-7:00, closed Sunday, you can leave your bags here. Telephone &
Pienza, formerly the village of Corsignano, was renamed and redesigned as a completely planned Gothic town, in honor of and at the command of the most famous of all its inhabitants in history, Pope Pius II (1405-1464; reigned as Pope starting in 1458). Its Centro Storico is a UNESCO World Heritage site. UNESCO's listing for Pienza can be seen at this link.