W. W. Collins, Cathedral Cities of Italy
“ It is true that with oft-repeated visits the vast building grows on one, but, however much its size may impress, it cannot be called a landmark in Italian architecture.Close by these two structures and due west of the cathedral façade, in the middle of the Piazza del Duomo, stands the Baptistery. Its eight walls were covered with marble by Arnolfo di Cambio some time after the west door had been removed and the rectangular space for the altar constructed inside. The three doors that remain are, with the lintels, superb examples in bronze of the Renaissance period. ”
