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