Duomo di San Giovanni Battista Torino

Starting from the fourth century were built three churches dedicated to Christ the Savior, St. John the Baptist and the Virgin Mary, whose archaeological remains are visible in the Diocesan Museum set up in the basement of the Cathedral. The Baptist Church, which initially served as a Baptistery, was enlarged in the Longobard period and the bishop's chair was transferred here, becoming the nucleus on which the present Cathedral was built. The predilection for this church seems to date back to the Longobards: the Queen Teodolinda who married the Duke of Turin Agilulfo, had proclaimed Saint John the patron saint of the kingdom.