Symbolising Roman elegance, this square is bordered by graciously fronted palaces, is decorated with ancient statues and an obelisk, and is adorned by a fountain. Sixtus V placed the Dioscuri from the Baths of Constantine here. Later, Pius VII erected an obelisk from the entrance to Augustus’ mausoleum between them. Finally, Pius IX completed the decor with the addition of a handsome ancient basin.