SOURCE: Giovanni Battista Piranesi. Vedute di Roma (Rome, [1747?-1788]), pl. 116 NOTES: The Baths of Diocletian were built in 298-306; the church of Santa Maria degli Angeli occupies the central hall of those Baths. Michelangelo designed the conversion in 1563-1566 for Pius IV, but Vanvitelli altered the church in 1749.