Another lonely church, set, not at the end of a byway by the river, but on the highroad itself, greets you as you enter Cascina. It is the Chiesa della Madonna dell' Acqua, rebuilt in the eighteenth century. In this wide plain there are many churches, some of them of a great antiquity, as S. Jacopo at Zambra and S. Lorenzo alle Corti, and in the hills you may find a place so wonderful as the Certosa di Calci, a monastery founded in 1366, but altered and spoiled in the seventeenth century, and the marvellous Church of S. Giovanni there. Cascina itself is as it were the image of this wide flat country between the hills and the Maremma, where the sun has so much influence and the shadows of the clouds drift over the fields all day long, and the mist shrouds the evening in blue and silver. Desolate and sober enough on a day of rain, when the sun shines this gaunt outpost of Pisa, for it is little more, is as gay as a flower by the wayside. The road runs through it, giving it its one long and almost straight street, while behind the poor houses that have so little to boast of, lies a beautiful old Piazza, with a great palace seemingly deserted on one side and an old tower and a church with a beautiful facade on another. Always a prize of the enemy, Cascina in the Pisan wars fell to Lucca, to the Guelph League, and to Florence. Its old walls, battered long ago, still remain to it, so that from afar, from the Pisan hills, for instance, it looks more picturesque than in fact it proves to be.