Caravaggio’s colossal “Madonna of the Rosary” (1605) and “The Crowning with Thorns” (detail, 1607), both at the Kunsthistorisches Museum, where I saw them just four days ago. The perennial prince of painting and unsurpassed master of chiaroscuro wizardry was born on this day in 1571 — in Milan, where I just got off the train this very morning. #caravaggio #chiaroscuro #botd @kunsthistorischesmuseumvienna