Evening had come when I found myself again on the Lung' Arno, in a world neither Pagan nor Christian, in which I am a stranger. * * * * * Leaving behind you Ponte di Mezzo and the Lung' Arno, _quasi a modo d'un archo di balestro_,[77] you come into the Borgo, under the low arches of the old houses that make a covered way. This is perhaps the oldest part of Pisa. Almost at once on your right you pass S. Michele in Borgo, built probably just before his death by Fra Guglielmo, that disciple of Niccolo Pisano. Fra Guglielmo died in the convent of S. Caterina, for he had been fifty-seven years in the Dominican Order. Tronci tells us that, being one day in Bologna, where he had gone with Niccolo his master to make a tomb for S. Domenico, when the old tomb was opened he secretly took a bone and hid it, and without saying anything presently set out for Pisa. Arrived there, he placed the relic under the table of the altar of S. Maria Maddalena, and was seen often by the brethren praying there,--they knew not why. But at his death he revealed his pious theft, and showed the bone in its place, and it was guarded and shown to the people. But S. Michele in Borgo is older than Fra Guglielmo, who died about the year 1313. Certainly the crypt is ancient as are the pillars. A certain _Buono_ is said to have built a church here in 990; but little, however, now remaining can be of that date, the church as a whole being of about 1312, and, as I have said, probably the last work of Fra Guglielmo. Passing up the Borgo, here and there we may see signs of ancient Pisa in the sunken pillars, for instance, before a house in a street on the left, Via del Monte, following which we come into the most beautiful Piazza in Pisa, perhaps in Italy, Piazza dei Cavalieri, once the Piazza dei Anziani. On the right is the Church of the Knights of St. Stephen, Santo Stefano dei Cavalieri; next to it is the beautiful palace of the Anziani, later the Palazzo Conventuale dei Cavalieri, rebuilt by Vasari. Almost opposite this is a palace under which the road passes, built to the shape of the Piazza; it marks the spot where the Tower of Hunger once stood, where the eagles of the Republic were housed, and where Conte Ugolino della Gherardesca with his sons and nephews was starved to death by Archbishop Ruggieri degli Ubaldini. Opposite to this is the marble Palazzo del Consiglio, also belonging to the Order of St. Stephen.