Il Fontanone, or 'big fountain'

…is just below me, on Gianicolo hill, with a commanding view of the city, made with stone and marble taken from the ancient Forum of Nerva and granite columns from the original St. Peter’s Basilica, commissioned by Pope Paolo V Borghese (1605-1621), marking the terminus of the Roman aqueduct Acqua Traiana and still receiving it’s water directly from Lake Bracciano 20 miles north.