An English inspiration in the Italian kitchen: maybe the only one! Plain white bread with the crusts removed (called pancarré in Italian), typically filled with prosciutto, tuna, artichoke hearts, smoked salmon and rocket, würstel, prawns, cheese, or many other things (but never cucumber!)
Tramezzini were adapted from the English tea sandwich in Turin's Caffé Mulassano in 1925. The bombastic ultranationalist poet Gabriele d'Annunzio invented an Italian name for them. Now they're the staple of the Italian café and train station bar. A good one will make six different kinds.