The martyrdom of Saint Peter. (Martyre de Saint Pierre; Martyrium des Heiligen Petrus) during the reign of roman emperor Nero (Neron) 1st century.- The walls of the church are decorated with frescoes by Niccolo Circignani (also called Pomarancio) (15th cent.) and Matteo da Siena (16th cent.) portraying 34 scenes depicting the persecution of Christians in the Roman Empire.- Basilica di Santo Stefano Rotondo al Celio (Basilica of St. Stephen in the Round on the Celian Hill - Eglise Saint-蓆ienne-le-Rond)Construction: 5th century. Celian Hill; Rome; Italy (2020)