The intervention proposed and sponsored by private affected all facades of Brera Palace and startedsince 2004 with the first preliminary investigations.Inside the important building there are the Ambrosian Library, the Art Gallery, the home of theAcademy of Fine Arts, the Superintendence of Demoantropological, Historical and Artistic Heritage,the Astronomical Observatory and the Botanical Garden.Brera Palace is a very important building not only for its history and architecture but also for thefunctions that take place inside and the high number of people who attend and visit.The project, by Studio Campanella Tessoni in Crema (Cr), is an initiative commissioned by private(AP Communication, Milan) and funded through sponsorship advertising with the support of theState Property Agency in Milan, the Regional Directorate for Cultural Heritage and Landscape ofLombardy and the Superintendence for Architectural Heritage and Landscape of Milan. The latter hasfunded an important campaign of preliminary analysis that it was conducted on the whole complex.They are made geometric and topographic surveys, rectifications of digital photographs of theexterior and interior facades, chemical and physical analysis of materials, a readingmensiocronologica and stratigraphic and an in-depth historical analysis.With all this information has been set the material-pathological surveys through the mapping ofrectifications of digital photos. This private initiative is served also to perform the interventions on thefacades of the internal court with public funds (project by Superintendence for Architectural Heritageand Landscape of Milan).