Bernini added the two halves of a broken segmental pediment on the sides of the upper level, replacing the original volutes, and the curved connecting element with the rich oak garlands. Further Baroque additions were the two flaming torches and the six mountains, the family symbols of the Chigi dynasty. The plain pediment was originally decorated with the coat of arms of Pope Sixtus IV hanging on an acanthus leaf scroll corbel but only the truncated upper part of the shield survived.