I've been to Europe only 3 times but a big takeaway was how tourism-based some city economies were, with Rome being at the top of that memory. Not surprised to see a sea of red in that map. On the flip side, we did travel to the (heel of the Italian boot) Puglia region later that trip to visit a distant family friend and had a great time visiting places like Bari and even smaller places like Polignano a Mare* on the coast, and Ostuni (inland a bit).
*Had a dessert that that I convinced myself at the time I would "bring to the states". It's called Granita, and essentially it's shaved italian ice (simple syrup, ice, flavoring) often served with a little warm cream on top. Almost like an icy-ish sorbet with a touch of cream. Compared to most desserts it's lightweight and not too bad for you, and was incredibly delicious and refreshing on a warm day. I still think one day it'll become known/trendy here!