Porta del Popolo, Rome

The exterior façade of this gateway in the Aurelian Wall (3 century), was built by Pius IV between 1562 and 1565 on the site of the ancient Porta Flaminia. In 1655, the Queen Christina of Sweden, converted to Roman Catholicism, commissioned to Bernini to decorate the façade with two scrolls supporting a garland under the star of the Chigi coat of arms.