fountain of the tritons piazza della bocca, rome

building starting last roman aqueduct acqua move background two aqueducts built years gave possibility erect fountains branches guaranteed widespread distribution water town secondary branch south tiber island ancient middleage monuments arcus argentariorum arch janus temple hercules victor portunus basilica cosmedin pope clement ordered construction monument memory clear pontiff chose fountain scarcely inhabited brokengrounded subject floods fulfillment raised criticisms location believed unsatisfactory