The fresco of the Madonna delle Grazie in Caponago is an ancient painting, probably dating back to the 16th century, depicting the Madonna lactans (the nursing Madonna) with the Child Jesus—an iconography linked to the tradition of the “Madonna of the Milk.” It is associated with the Sanctuary of Santa Maria delle Grazie (although some sources mention Cesano Maderno; the municipalities are neighboring and share a similar cult) and bears witness to ancient devotional practices involving offerings of precious goods to obtain nourishing milk. Despite later overpainting, the work is attributed to the school of Bernardino Luini and portrays the Virgin seated, inviting devotion, with the Child reaching out his hand.