Great question. Knee jerk response is lasagna bolognese in bologna, the city that invented lasagna. Also there was this Emiglia-romana style piadina place in Rome that made these kind of fusion piadine (freshly griddled flatbread wrap things more associated with the middle-north of Italy than Rome) with Roman style pasta ingredients as the innards; the amatriciana piadina there is so good. I also remember a slice of pizza I got in ventimiglia, right on the border with France; the pizza there is super thick, cheese less and closer to focaccia. Great stuff