James A.
Yelp
Sinopie Museum is on the site originally of a hospital, but now houses large frescos meant to be saved, in a climate controlled indoor space. It is one of six buildings that you can visit as part of the Square of Pisa. You do need a ticket to enter, costing 7€ separately, but included as part of a 10€ package for the other museums (not the Tower)
I love how the museum is structured, with 4 total stories (all accessible via elevator), but of different floor space, to allow fresco of different sizes to be displayed. For example the bottom floor housed frescos that took up more than one floor.
You can walk through the entire floor space pretty fast if you peruse, but many of the frescos have interesting write-ups next to them, that you can use to study them. There was a nice 3-d rendition of the campus here as well. We spent about 30 minutes here.