 Sant'Elena, Rome

Sant'Elena or Sant'Elena fuori Porta Prenestina is a church in Rome (Italy), in the Prenestino-Labicano Quarter, facing on Via Casilina.The church was built by Pope Pius X as a memorial of the 16th centenary of the Edict of Milan (313), when Roman Emperors Constantine I and Licinius acknowledged Christianity as a licit and lawful religion within the Empire; it was dedicated to Constantine's mother, Helena.