The scenic staircase is decorated with marble ornamentation by Marzocchi, Vespignani and Galassi.

The cast iron banisters were designed by Davide Venturoli and the marble vases by Ferdinando Amadori.

Other artists involved in this decoration include Giuseppe Romagnoli and Bruno Boari.

An assembly hall, the Sala dei Cento, has fresco decoration by Luigi Samoggia and speckled dark walnut furniture by engraver Carlo Fraboni.

The interior has canvases in the collection of the foundation by Nicola Bertuzzi, Carlo Lodi, Antonio Beccadelli, Pietro Roppa, Bernardo Minozzi, Ercole Drei, Lorenzo Pasinelli, Giovanni Romagnoli, Guercino, Giuseppe Maria Crespi, Annibale Carracci, Donato Creti, Antonio Basoli, Pietro Poppi and Pelagio Palagi.