The ground floor is entirely clad in smooth ashlar, incorporating the simple openings of the main door (barely marked by the coat of arms) and the shops; five elegant balconies open onto the piano nobile and the attic is crowned with stylised acroteria and palmettes. Inside, there is an 18th-century votive marble shrine, two elliptical portraits of Ugo Francesca Maria Proto (1738) and Francesca Proto Patti (1753), and an 18th-century statue also depicting Abundance. It was the residence of important personalities: in 1622 Emanuele Filiberto of Savoy, in 1806 Ferdinand III of Bourbon (an exile from Naples reoccupied by Napoleon's troops) with Crown Prince Francis I and his brother Leopold of Bourbon, in 1860 Garibaldi received Agostino Depretis and Francesco Crispi there, and it was the site of his Headquarters. Greater prestige was given to the building by the location in one of its wings, in the 18th century, of the Accademia Letteraria degli Ereini.