The Piazza del Duomo forms a harmonious space for the graceful octagonal baptistery, begun in 1196, and the austere nobility of the 12th-century Romanesque cathedral and its 13th-century campanile.
The cathedral is much older than the baptistery.
mnli hypothesis: The cathedral is much older than the baptistery. premise: The Piazza del Duomo forms a harmonious space for the graceful octagonal baptistery, begun in 1196, and the austere nobility of the 12th-century Romanesque cathedral and its 13th-century campanile.