The church of Saints Cosmas and Damien, which overlooks the Roman Republican Forum in Rome, also has some of the city’s most remarkable mosaics in the apse. Saints Cosmas and Damien were brothers, both doctors who would not take money for their services, thus they became known as the Anargyroi or ‘unmercenary’ (lit. ‘without silver’) saints. They were martyred in the great anti-Christian era of the 280s, during the reign of the Emperor Diocletian. Here, St Peter presents St Cosmas (who holds the bejeweled wreath-crown of martyrdom) to Christ, who stands in the center of the apse decorations, which date from the 6th to 7th century CE.