 The allegories are resolutely biblical, avoiding classical pagan allusions in publicising the modern pope who demolished the Septizodium to make way for his avenues linking the major Christian monuments of Rome, the pilgrimage basilicas.Any "mostra" had its practical aspect in providing public water supply for its "rione" (the city's administrative areas).The marble basins, flanked by Egyptian lions that spit water, served as reservoirs for local inhabitants; marble barriers keep animals from polluting the water