The principal remains, which are now exhibited by the dim torch of a solitary cicerone, are those of nine chambers, extending for 300 feet, and having on the north a kind of corridor, or cryptoporticus, whose vault is covered with paintings of birds, griffins, and flowers, &c. In two of these halls are alcoves for couches, and in one is a cavity for a fountain with a trench round it, like that in the nymphæum of the Palace of the Cæsars. In one of the halls is a group representing Venus attended by two Cupids, with doves hovering over her. Near this a pedestal is shown as that occupied by the Laocoon, though it was really found in the Vigna de Fredis, between the Sette Sale and Sta. Maria Maggiore. A set of thirty engravings, published by Mirri, from drawings taken in 1776, show what the paintings were at that time, but very few now remain perfect. A group of Coriolanus and his mother, represented in Mirri's work, is now inaccessible. All the paintings are Pompeian in character, and for some time were considered the best remains of ancient pictorial art in Rome, but they are inferior to those which have since been discovered on the Latin way and at the Baths of Livia. The chambers which open beyond the nine outer halls are considered to be part of the Golden House. In one of these the Meleager of the Vatican was found. A small chapel, dedicated to Sta. Felicitas and her seven sons (evidently engrafted upon the pagan building in the sixth century), was discovered in 1813. It is like the chapels in the catacombs, and is decorated with the conventional frescoes of the Good Shepherd, Daniel in the lions' den, &c. There are also some faint remains of a fresco of the sainted patrons.
Behind the convent of S. Pietro in Vincoli, in the open vineyards, are other ruins called the Sette Sale, being remains of the reservoirs (in reality nine in number) for the Baths. In these vineyards also are three large circular ruins, adorned on the interior with rows of niches for statues. One of them is partly built into the Polveriera, or powder magazine. These have been referred alternately to the Baths of Titus and those of Trajan.
Immediately behind the forum of Nerva stands the colossal brick tower, known as the Torre dei Conti, and built by Innocent III. (1198—1216) as a retreat for his family, now extinct. Its architect was Marchione d'Arezzo, and it was so much admired by Petrarch that he declared it had "no equal upon earth;" he must have meant in height. Four of the Conti have mounted the papal throne, Innocent III., Gregory IX., Alexander IV., and Innocent XIII. The last-named pope (1721—24) boasted of having "nine uncles, eight brothers, four nephews, and seven great nephews;" yet—a century after—and not a Conti remained.
If we turn to the left close to this, we shall find, in a commanding position, the famous Church of S. Pietro in Vincoli, said to have been originally founded in A.D. 109 by Theodora, sister of Hermes, Prefect of Rome, both converts of the then pope, who was the martyr St. Alexander of the basilica in the Campagna. A bolder legend attributes the foundation to St. Peter himself, who is believed to have dedicated this church to his Divine Master. History, however, can assign no earlier foundation than that in 442, by the Empress Eudoxia, wife of Valentinian III., from whom the church takes its name of the Eudoxican Basilica, and who placed there one of the famous chains which now form its great attraction to Roman Catholic pilgrims.
"The chains, left in the Mamertine Prisons after St. Peter's confinement there, are said to have been found by the martyr Sta. Balbina, in 126, and by her given to Theodora, another sainted martyr, sister to Hermes, Prefect of Rome, from whom they passed into the hands of St. Alexander, first pope of that name, and were finally deposited by him in the church erected by Theodora, where they have since remained. Such is the legendary, but the historic origin of this basilica cannot be traced higher than about the middle of the fifth century, subsequent to the year 439, when Juvenal, Bishop of Jerusalem, presented to the Empress Eudoxia, wife of Theodosius the younger, two chains, believed to be those of St. Peter, one of which was placed by her in the basilica of the apostles at Constantinople, and the other sent to Rome for her daughter Eudoxia, wife of Valentinian III., who caused this church, hence called Eudoxian, to be erected, as the special shrine of Peter's chains."—Hemans.
One chain had been sent to Rome by Eudoxia the elder, and the other remained at Constantinople, but the Romans could not rest satisfied with the possession of half the relic; and within the walls of this very basilica, Leo I. beheld in a vision the miraculous and mystical uniting of the two chains, since which they have both been exhibited here, and the day of their being soldered together by invisible power, August 1, has been kept sacred in the Latin Church!
The church is at present entered by an ugly atrium, which was the work of Fontana in 1705; but Bacio Pintelli had already done almost all that was possible to destroy the features of the old basilica, under the Cardinal Titular of the church, Giulio della Rovere, the same who, as Pope Julius II., destroyed the old St Peter's and eighty-seven tombs of his predecessors. By Pintelli the present capitals were added to the columns in the nave, and the horizontal architrave above them was exchanged for a series of narrow round-headed arches.
But, in spite of alterations, the interior is still imposing. Two long lines of ancient fluted Doric columns (ten on each side), relics of the Baths of Titus or Trajan, which once covered this site, lead the eye to the high altar, supposed to cover the remains of the seven Maccabean brothers, and to the tribune, which contains an ancient episcopal throne, and is adorned with frescoes by Jacopo Coppi, a Florentine of the sixteenth century, illustrative of the life of St. Peter. Beneath these is the tomb of G. Clovis, a miniature painter of the sixteenth century, and canon of this church.
On the left of the entrance is the tomb of Antonio Pollajuolo, the famous worker in bronze, and his brother Pietro. The fresco above, which is ascribed to Pollajuolo, refers to the translation of the body of St. Sebastian, as "Depulsor Pestilitatis," from the catacombs to this church,—one of the most picturesque stories of the middle ages. The great plague of A.D. 680 was ushered in by an awful vision of the two angels of good and evil, who wandered through the streets by night, side by side, when the one smote upon the door where death was to enter, unless arrested by the other. The people continued to die by hundreds daily. At length a citizen dreamt that the sickness would cease when the body of St. Sebastian should be brought into the city, and when this was done, the pestilence was stayed. In the fresco the whole story is told. In the background the citizen tells his dream to Pope Agatho, who is seated among his cardinals. On the right the angels of good and evil (the bad angel represented as a devil) are making their mysterious visitation, on the left a procession is bringing in the relics, and the foreground is strewn with the corpses of the dead. The general invocation of St. Sebastian in Italy, and the frequent introduction of his figure in art, have their origin in this story.