 Two circular basins, capture the water, the top ringed by children pouring water from jugs, while above them is the heraldic symbol of the papal family.Commissioned by Pope Sixtus V in 1589, the fountain was designed by Giacomo della Porta and constructed by Andrea Brasca, Pietro Gucci and Pace Naldini.In front of the fountain, once stood the facade of Santi Venanzio e Ansovino, razed and now replaced with by the roads and park-space near the Altare della Patria.