Pope Sixtus V’s great fountain demands for its effect, like Paul V’s, wide and spacious surroundings. The high modern buildings crowding upon it and dwarfing it have done much toward diminishing its artistic values. One of the panels in the Vatican Library shows what the fountain was like in the years immediately following its erection. Gardens and vineyards lay all about it, and it easily dominated the walls and gateways which were its only architectural neighbors. The Porta Pia to the left merely enhanced its dignity, and in the far distance the hills, aqueducts, and the open sky lent themselves for a magnificent background. The Acqua Felice, which was the first water of papal Rome, had been the last water brought to the ancient city. In 226 the Emperor Alexander Severus built the eleventh and last aqueduct of the classic city. Its remains are still to be seen on the Via Prænestina. Over this aqueduct he brought the Acqua Alexandrina, which was from practically the same sources as those which now supply the Acqua Felice. The Acqua Alexandrina was brought by the Emperor down the Via Labicana as far as the Esquiline, where he erected for it a magnificent fountain. A coin of his period shows the design to have somewhat resembled the present “Fontanone” on the Janiculum. Sixtus V selected as the site for his fountain an open space on the Viminal Hill near the Church of Santa Susanna. He faced it southwest, at right angles to the Via Pia, which terminated at some distance to the northeast in the Porta Pia. The Acqua Felice enters Rome at the Porta Maggiore at the altitude of 59 metres and supplies 21,632.8 cubic metres of water daily. In order to bring the water to Fontana’s fountain it was necessary to cut a wide street, the Via Ceruaia, and to tunnel through the Baths of Diocletian. Although the Acqua Felice served the Pope’s purposes and literally made the desert blossom like the rose, Sixtus V had no sentiment about it. When the water actually reached the city, his sister and nephew, thinking to please him, hastened to bring him a cupful. The Pope, who hated a scene of any kind, refused to drink it, declaring that it had no taste, which is quite true. It is to this day the least valued of the Roman waters, and the overflow or “lapsed water” of Fontana’s great fountain is used for laundry purposes. The Pope bought the land containing the feeding-springs of the Acqua Felice from Cardinal Colonna, and brought it to the city underground for thirteen miles and for the remaining seven over arches. Its channel is known as the “ugly aqueduct.”