This huge and ornate fountain, with tiered basins and sculptures rippling in concentric circles, forms the centrepiece of Piazza Pretoria , a spacious square just south of the Quattro Canti.The city bought the fountain in 1573; however, the flagrant nudity of the provocative nymphs proved too much for Sicilian church-goers attending Mass next door, and they prudishly dubbed it the Fountain of Shame.