Rome, Fresco `The Miracle of the Chains´ in Basilica San Pietro in Vincoli.
18th century fresco, The Miracle of the Chains in the center of the coffered ceiling by Giovanni Battista Parodi (1706). In this scene, Pope Alexander heals the neck goiter of Saint Balbina by touching her with the chains that once bound St Peter.
San Pietro in Vincoli (Saint Peter in Chains) is a Roman Catholic titular church and minor basilica in Rome, Italy, best known for being the home of Michelangelo's statue of Moses, part of the tomb of Pope Julius II.
Also known as the Basilica Eudoxiana, it was first rebuilt on older foundations in 432–440 to house the relic of the chains that bound Saint Peter when he was imprisoned in Jerusalem, the episode called "Liberation of Saint Peter". The Empress Eudoxia (wife of Emperor Valentinian III), who received them as a gift from her mother, Aelia Eudocia, consort of Valentinian II, presented the chains to Pope Leo I. Aelia Eudocia had received these chains as a gift from Iuvenalis, bishop of Jerusalem.
more on https://en.wikipedia.org/wiki/San_Pietro_in_Vincoli