The Last Supper (Santa Maria delle Grazie)

The scarcity is the whole problem

Leonardo’s mural lives on the refectory wall of Santa Maria delle Grazie, in a sealed, climate-controlled room that admits exactly 40 people every 15 minutes. That tiny capacity, not the price, is why it’s hard to see — at €15 a head it’s one of the cheapest world-famous sights in Italy, but the slots run out weeks ahead. There are no walk-up tickets and no same-day sales; if you haven’t booked, you don’t get in.

Official tickets come out in quarterly batches about three months before the dates they cover, and the good slots can vanish within hours of release. One thing that trips people up: the museum’s own cenacolovinciano.org doesn’t sell tickets — it links out to the booking platform at cenacolovinciano.vivaticket.it, which is where the actual slots are. The practical rule is simple: the moment your Milan dates are fixed, go there and book. If the batch covering your trip is already out and sold, there’s a small weekly top-up released every Wednesday at noon Italian time for the following week — useful, but a scramble, and only for individual bookings.

When it’s sold out — and what 15 minutes is really like

If the official site shows nothing for your dates, book a guided tour. Operators hold their own ring-fenced allocation of slots, so a tour often has space when the museum’s own site is empty. You’ll pay €40–55 instead of €15, but you also get a few minutes of context outside the doors, and you only need to turn up 10 minutes before your slot rather than the 30 minutes the museum demands of independent visitors who miss it and forfeit the ticket.

It’s worth it, with expectations set. The painting is faded and heavily restored — Leonardo worked on dry plaster, so it began flaking in his own lifetime — and you won’t see vivid colour. What you get is the composition at full scale, that frozen second after Christ says someone at the table will betray him, and the odd hush of being one of 40 people in a quiet sealed room. Allow about 45 minutes on site for what is genuinely a 15-minute viewing. Don’t build a whole day around it — pair it with a stroll to the Duomo or the Castello Sforzesco, both an easy tram ride east. The nearest stops are Metro M1 (red) at Conciliazione, a five-minute walk, or tram 16, which stops directly opposite the church.