Palazzo Branconio dell'Aquila  The Palazzo Branconio dell'Aquila is a lost palace in the "rione" Borgo of Rome (west of Castel Sant'Angelo), designed by Raphael for Giovanbattista Branconio dell'Aquila, a papal advisor and goldsmith. It was designed by the Italian artist in his last years of life, around 1520. The palace lay along the Borgo Nuovo road, and was demolished around 1660 together with the adjoining block, named "Isola del Priorato" after the nearby Priory of the Knights of Rhodes, to open a square in front of Saint Peter's Square colonnade, the Piazza Rusticucci.