the duomo in siena … words don’t really describe it. the cathedral was built between 1215 and 1263 using black and white marble, black and white being the colors of siena. the amazing walls and ceilings and the illustrated music manuscripts are from the adjoining piccolomini library; the frescoes tell the story of cardinal eneo silvio piccolomini of siena, who became pope pius ii (and was the uncle of pope pius iii), and the books are from his collection. click on any photo to enlarge it.