Santa Maria delle Grazie, Milan

The Last Supper painting on a church wall by DaVinci is definitely worth seeing in person as it's a priceless treasure. It's heavily booked out even in low season. Tour guides craftily snap up all the tickets in advance for month and you have to book with the ones that have them. That being said I managed to get us tickets and it was well worth it. You need to go through security checkpoints and into a vacuum sealed room. They only allow a limited number of people at any given time. The room is kept at a certain temperature to minimize over-tourism. The church was bombed in World War 2 but wall remained intact. So they restored the church around it again. Amazing luck or divine intervention?

Worth a visit to see the Last Supper in person! You will need to book tickets well in advance. We visited at the beginning of March - low season - and they were completely sold out. They have a pretty organized system. You will need to exchange your voucher for a ticket about 30 min in advance, where you will also need to put your backpacks in lockers. This is all done, along with the green pass/vaccine card check, at the ticket booth to the left of the church. Then you're instructed to line up at the museum entrance where you'll be let in only if it's within 5 minutes of your entrance time on your ticket. They are fairly strict about this and we saw quite a few people turned away. You will need to go through security, then you will have time to read about the history of the church. You'll then be allowed in to see the Last Supper. You're given 15 minutes to see the work and you're free to leave anytime before then. If you'd like to have the Last Supper to yourself, just stay the whole 15 minutes, as most people leave around 5-10 minute mark. It's a wonderful and powerful piece and well worth a visit if you're in Milan.