What you actually see in the refectory
The room comes first
This is not a gallery and it never was. Santa Maria delle Grazie is a working church and convent complex, and the refectory is where the community ate. That matters for what you are looking at, because the painting was made for people sitting at tables along the length of the hall, at the end of the room they faced every day. The perspective is built for that hall and for roughly that eye level. Standing in it is the one thing a photograph cannot give you, and it is the strongest argument for going.
You reach it through a set of climate-controlled doors and a holding space between the street air and the room, which is there to protect the surface rather than to build suspense. The group ahead of you is coming out as you go in, and the group behind you is already in that airlock while you are inside. The whole choreography exists because of the fifteen-minute slot and the forty-person cap — the practical side of that is on the fifteen-minute page.
The composition, and the thing to look for
Thirteen figures along one side of a long table. Christ at the centre, the apostles in four groups of three, and the moment chosen is the announcement of the betrayal — so what the painting is really about is twelve reactions to one sentence. Once you have the four threes, the wall organises itself: each group is a small piece of theatre with its own gesture and its own direction of attention, and every line in the architecture behind them runs back towards the centre.
Fifteen minutes is enough to read all four groups properly if you know that is the task when you walk in. It is not enough to work out that it is the task, then do it, which is the single best argument for having somebody with you who can say it in the first thirty seconds. James, on one of the walking tours, singled out his guide’s knowledge of art history; Liliane wrote that Barbara was generous with her explanations. That is what those reviews are describing.
The condition, without softening it
Leonardo worked on a dry wall instead of the true fresco technique, which let him keep reworking the surface and cost him permanence. It began deteriorating within his lifetime. Expect a surface that is uneven, with passages far clearer than others, rather than the even, saturated image printed in books. I would rather you know that in advance: nearly every disappointed visitor I met had a reproduction in their head and was measuring the wall against it. Read the worth-it page for the honest version of that trade.
Turn around
Most people spend fifteen minutes facing one direction and never see the other painted wall. Montorfano’s Crucifixion covers the end behind you, and it is a substantial work in its own right that happens to share a room with the most famous mural in the world. Give it thirty seconds. It also tells you something useful about what the refectory was for, which is that both ends of the hall were painted because the community looked at both.
What is outside the room
The complex around it is worth the extra twenty minutes if your ticket covers it: a Renaissance church with a brick apse and a sixteen-sided tribune attributed to Bramante, and the Cloister of the Frogs. Several of the tours include access to the church, convent and garden alongside the refectory, and the ticket-and-guide option is explicit about it — the inclusions are compared on the tours page. If the question you actually came with is about the figure to Christ’s right, it has its own page: is there a woman in the painting.
Frequently asked questions
What is in the Last Supper painting?
Christ and the twelve apostles at the moment the betrayal is announced, seated along one side of a long table and arranged in four groups of three. The mural covers one whole end wall of the refectory at Santa Maria delle Grazie.
Why does the Last Supper look faded?
Because Leonardo painted it in the 1490s on a dry wall rather than in true fresco, so it began deteriorating within his own lifetime. What you see is softer and patchier than a reproduction — which is the main reason some visitors feel flat, as the worth-it page discusses.
Is there anything else to see in the refectory?
Yes. Montorfano’s Crucifixion covers the wall behind you, and most visitors never turn round. Outside, the church has a brick apse and a sixteen-sided tribune attributed to Bramante, plus the Cloister of the Frogs.
How much can you take in during fifteen minutes?
All four groups of three, if you know that is the task when you walk in. That is why a guide earns their place here — see how long the visit is.