Capuchin Museum
Upstairs in the church, the first chapel on the right contains Guido Reni's mid-17th-century Archangel St. Michael Trampling the Devil. The painting caused great scandal after an astute contemporary observer remarked that the face of the devil bore a surprising resemblance to Pope Innocent X, archenemy of Reni's Barberini patrons. Compare the devil with the bust of the pope that you saw in the Palazzo Doria Pamphilj and judge for yourself.