The Diocesan Museum Carlo Maria Martini is part of the complex of the Cloisters of Sant'Eustorgio. It was inaugurated in 2001 by Cardinal Carlo Maria Martini to whom it was then named in 2017. The permanent collection of the Diocesan Museum is now made up of almost a thousand works, between the second and twenty-first centuries. The collection is the result of various bequests and donations that offers an interesting panorama of the archiepiscopal and private collector history. The collections are currently set up along the three restored bodies of the second cloister of Sant'Eustorgio and are in continuous enrichment. Also part of the permanent collection are the works of Lucio Fontana, the Treasure of San Nazaro and the Gold Funds of the Crespi Collection, one of the most significant of the Ambrosian diocese. Today the Diocesan Museum Carlo Maria Martini hosts temporary exhibitions and cultural events.