Leonardo did not paint a fresco: he experimented with tempera on dry wall, so he could revise as if on panel. The choice doomed the Last Supper to crumble almost immediately — and made it the most restored, most protected painting on earth. In the refectory of Santa Maria delle Grazie, between 1495 and 1498, he fixed the instant after the words "one of you will betray me": twelve human reactions caught like film frames.
What to see
The gesture running down the table like a wave: groups of three, hands denying, grasping, pointing; Judas shrinking into shadow with his purse. The painted perspective that breaks the wall and extends the real refectory. And on the opposite wall, Montorfano's Crucifixion — which almost no one turns to see, and is the perfect counterpoint: the before and after of the same story.
Visiting
Strictly capped entries: small groups, fifteen minutes, booking mandatory — tickets sell out weeks or months ahead, the moment each sales block opens. The microclimate is part of the conservation: you pass through filtering chambers that settle air and dust. Fifteen minutes suffice: there is one work, and it watches you.
Getting there
Metro M1 "Conciliazione" or M2 "Cadorna", then a few minutes on foot; tram 16 stops outside. The church — UNESCO-listed together with the Cenacolo — earns its quarter hour, Bramante's tribune included.
Our editors' tip
Set an alarm for the day ticket sales open: that is the only real secret. Inside, spend the first minute wide-eyed and phone-down: fifteen minutes go fast, and the memory outlasts any photo.