Facing the bridge, is the famous Castle of S. Angelo, built by the Emperor Hadrian as his family tomb, because the last niche in the imperial mausoleum of Augustus was filled when the ashes of Nerva were laid there. The first funeral here was that of Elius Verus, the first adopted son of Hadrian, who died before him. The emperor himself died at Baiæ, but his remains were transported hither from a temporary tomb at Pozzuoli by his successor Antoninus Pius, by whom the mausoleum was completed in A.D. 140. Here, also, were buried, Antoninus Pius, A.D. 161; Marcus Aurelius, 180; Commodus, 192; and Septimius Severus, in an urn of gold, enclosed in one of alabaster, A.D. 211; Caracalla, in 217, was the last emperor interred here. The well-known lines of Byron:
"Turn to the mole which Hadrian rear'd on high,
Imperial mimic of old Egypt's piles,
Colossal copyist of deformity,
Whose travell'd phantasy from the far Nile's
Enormous model, doom'd the artist's toils
To build for giants, and for his vain earth,
His shrunken ashes, raise this dome! How smiles
The gazer's eye with philosophic mirth,
To view the huge design which sprung from such a birth."
seem rather applicable to the Pyramid of Caius Cestius than to this mausoleum.
The castle, as it now appears, is but the skeleton of the magnificent tomb of the emperors. Procopius, writing in the sixth century, describes its appearance in his time. "It is built," he says, "of Parian marble; the square blocks fit closely to each other without any cement. It has four equal sides, each a stone's throw in length. In height it rises above the walls of the city. On the summit are statues of men and horses, of admirable workmanship, in Parian marble." Canina, in his "Architectura Romana," gives a restoration of the mausoleum, which shows how it consisted of three storeys: 1, a quadrangular basement, the upper part intersected with Doric pillars, between which were spaces for epitaphs of the dead within, and surmounted at the corners by marble equestrian statues; 2, a circular storey, with fluted Ionic colonnades: 3, a circular storey, surrounded by Corinthian columns, between which were statues. The whole was surmounted by a pyramidal roof, ending in a bronze fir-cone.
"The mausoleum which Hadrian erected for himself on the further bank of the Tiber far outshone the tomb of Augustus, which it nearly confronted. Of the size and dignity which characterized this work of Egyptian massiveness, we may gain a conception from the existing remains; but it requires an effort of imagination to transform the scarred and shapeless bulk before us, into the graceful pile which rose column upon column, surmounted by a gilded dome of span almost unrivalled." Merivale, ch. lxvi.
The history of the Mausoleum, in the middle ages, is almost the history of Rome. It was probably first turned into a fortress by Honorius, A.D. 423. From Theodoric it derives the name of "Carcer Theodorici." In 537, it was besieged by Vitiges, when the defending garrison, reduced to the last extremity, hurled down all the magnificent statues which decorated the cornice, upon the besiegers. In A.D. 498 Pope Symmachus removed the bronze fir-cone at the apex of the roof to the court of St. Peter's, whence it was afterwards transferred to the Vatican garden, where it is still to be seen between two bronze peacocks, which probably stood on either side of the entrance.
Belisarius defended the castle against Totila, whose Gothic troops captured and held it for three years, after which it was taken by Narses.
It was in 530 that the event occurred which gave the building its present name. Pope Gregory the Great was leading a penitential procession to St. Peter's, in order to offer up prayers for the staying of the great pestilence which followed the inundation of 589; when, as he was crossing the bridge, even while the people were falling dead around him, he looked up at the mausoleum, and saw an angel on its summit, sheathing a bloody sword,[319] while a choir of angels around chaunted with celestial voices, the anthem, since adopted by the Church in her vesper service—"Regina cœli, lætare—quia quem meruisti portare—resurrexit, sicut dixit, Alleluja"—To which the earthly voice of the pope solemnly responded, "Ora pro nobis Deum, Alleluja."[320]
In the tenth century the fortress was occupied by the infamous Marozia, who, in turn, brought her three husbands (Alberic, Count of Tusculum; Guido, Marquis of Tuscany; and Hugo, King of Italy) thither, to tyrannise with her over Rome. It was within the walls of this building that Alberic, her son by her first husband, waiting upon his royal stepfather at table, threw a bowl of water over him, when Hugo retorted by a blow, which was the signal for an insurrection, the people taking part with Alberic, putting the king to flight, and imprisoning Marozia. Shut up within these walls, Pope John XI. (931-936), son of Marozia by her first husband, ruled under the guidance of his stronger-minded brother Alberic; here, also, Octavian, son of Alberic, and grandson of Marozia, succeeded in forcing his election as John XII. (being the first pope who took a new name), and scandalised Christendom by a life of murder, robbery, adultery, and incest.
In 974 the castle was seized by Cencio (Crescenzio Nomentano), the consul, who raised up an anti-pope (Boniface VII.) here, with the determination of destroying the temporal power of the popes, and imprisoned and murdered two popes, Benedict VI. (972), and John XIV. (984), within these walls. In 996 another lawful pope, Gregory V., calling in the emperor Otho to his assistance, took the castle, and beheaded Cencio, though he had promised him life if he would surrender. From this governor the fortress long held the name of Castello de Crescenzio, or Turris Crescentii, by which it is described in mediæval writings. A second Cencio supported another anti-pope, Cadolaus, here in 1063, against Pope Alexander II. A third Cencio imprisoned Gregory VII. here in 1084. From this time the possession of the castle was a constant point of contest between popes and anti-popes. In 1313 Arlotto degli Stefaneschi, having demolished most of the other towers in the city, arranged the same fate for S. Angelo, but it was saved by cession to the Orsini. It was from hence, on December 15, 1347, that Rienzi fled to Bohemia, at the end of his first period of power, his wife having previously made her escape disguised as a friar.