neighbouring areas
| Abruzzo | Friuli-Venezia-Giulia | Molise | Tuscany |
| Basilicata | Lazio | Piemonte | Trentino-Alto-Adige |
| Calabria | Liguria | Puglia | Umbria |
| Campania | Lombardy | Sardinia | Aosta Valley |
| Emilia-Romagna | Marche | Sicily |
other regions in Italy
| Abruzzo | Emilia-Romagna | Marche | Sicily |
| Aosta Valley | Friuli-Venezia-Giulia | Molise | Trentino-Alto-Adige |
| Basilicata | Lazio | Piemonte | Tuscany |
| Calabria | Liguria | Puglia | Umbria |
| Campania | Lombardy | Sardinia |