Monument toPope Clement X (1682-86) by Mattia de' Rossi (Emilio Altieri, Rome, b.1590/r.1670-76) The monument to Pope Clement X was designed by the Roman architect Mattia de’ Rossi (1637-95). The statue of the pope was carved by Ercole Ferrata. He is flanked by statues of Clemency, the work of Giuseppe Mazzuoli, and Goodness by Lazzaro Morelli. The bas-relief by Leonardo Reti depicts the opening of the Holy Door at the beginning of the Jubilee of 1675.
At almost eighty years of age, Emilio Altieri is the oldest person ever to have been elected Pope.
In front of the monument, under a simple tombstone, lie the remains of Pope Sixtus IV (r. 1471-84) and his nephew Pope Julius II (r. 1503-13), who, between them, were responsible for the building and decoration of the Sistine Chapel.