The Museum is located in the wing originally used for the workshops and dormitories of the Stelline orphanage. The building was let to private citizens because of the need for lodgings after the bombings in 1943 which destroyed the building of San Pietro in Gessate. In 2009, l'Azienda di Servizi alla Persona Istituti Milanesi Martinitt e Stelline and Pio Albergo Trivulzio decided to use the building as a showcase for their artistic and historical heritage, with the official opening of the Martinitt e Stelline Museum: this is a historical museum whose cultural heritage is displayed through the use of multimedia systems that provide excellent interaction with archival sources. The museum relates the history of the people, the bodies and the institutes dedicated to offering medical care, education, employment, and assistance to all those who were in need. Visitors can enter the world of the Martinitt and Stelline children; the Milan "with heart in hand" that existed between the 19th and 20th centuries, to discover how the Martinitt and Stelline Institutes represented an example of enlightened philanthropy, and an incubator for some of the more important entrepreneurial experiments in Italy. As well as two floors dedicated to the exhibition spaces, the building also preserves the historical archives of all three Institutes and the Martinitt library; there is also a study room, an area reserved for temporary exhibitions and events, and course classrooms.