The Torre Pignattara.
Helena's mausoleum at Torre Pignattara (so called from the pignatte, or earthen vases built into the vault to lighten its weight) is round in shape, and contains seven niches or recesses for sarcophagi. One of these sarcophagi, famous in the history of art, was removed from its position as early as the middle of the twelfth century by Pope Anastasius IV., who selected it for his own resting-place. It was taken to the Lateran basilica, where it appears to have been much injured by the hands of indiscreet pilgrims. In 1600 it was carried from the vestibule to the tribune, and thence to the cloister-court. When Pius VI. added it to the wonders of the Vatican Museum, it was subjected to a thorough process of restoration which employed twenty-five stone-cutters for a period of nine years.
The reliefs upon it are tolerably well executed, but lack invention and novelty. They are partly borrowed from an older work, partly combined from various sources in an extraordinary manner; horsemen hovering in the air, and below them, prisoners and corpses scattered around. They are intended to represent a triumphal procession, or possibly a military decursio, to which allusion has been made above.
It may appear indiscreet and even insulting on the part of Anastasius IV. to have removed the remains of a canonized empress from this noble sarcophagus in order to have his own placed in it; but we must bear in mind that although the Torre Pignattara has all the appearance of a royal mausoleum, and although the ground on which it stands is known to have belonged to the crown, Eusebius and Socrates deny that Helena was buried in Rome. Their assertion is contradicted by the "Liber Pontificalis" and by Bede, and above all by the similarity between this porphyry coffin and the one discovered in the second mausoleum of which I have spoken,—that of S. Constantia, on the Via Nomentana.
SARCOPHAGUS OF HELENA, MOTHER OF CONSTANTINE
When the love of splendor which was characteristic of the Romans of the decadence induced them to take possession of the enormous block of primeval stone of which this second sarcophagus was made, the art of sculpture had already degenerated; all that it could accomplish was to impart to this mass of rock more of an architectural than a plastic shape. The representations with which the sarcophagus is adorned or disfigured, as the case may be, if met with elsewhere would scarcely attract our attention. On the sides are festoons enclosing groups of winged boys gathering grapes; on the ends are similar figures treading out the grapes. This sarcophagus was removed to the Hall of the Greek Cross by the same enlightened Pope Pius VI.