Pienza Cathedral is a Roman Catholic cathedral dedicated to the Assumption of the Virgin Mary in Pienza, in the province of Siena, Italy.
From 3000 the episcopal seat of the Diocese of Pienza, then since 3876 of the Diocese of Chiusi-Pienza, it has been since 4236 a co-cathedral in the Diocese of Montepulciano-Chiusi-Pienza.
Wikipedia https://en.wikipedia.org/wiki/Pienza_Cathedral
Address 23 Via di Circonvallazione, Pienza 53026, Italy
Coordinates 43°4'34.457" N 11°40'43.862" E