On the site of Pope Sixtus V's Villa Montalto-Peretti (demolished in 1883 after the construction of the nearby train station), the present building was constructed in the neo-cinquecentesco style between 1883 and 1887 by the architect Camillo Pistrucci to house a Jesuit seminary. Used partially as a military hospital during the second world war, it then returned to scholastic functions until 1960. In 1981, by which time it was crumbling, the State acquired it for 19 billion lire and granted it to the museum. Its restoration and adaptation began in 1983. It was inaugurated as part of the museum in 1995 and completed in 1998.