Southern Italy forms the lower part of the Italian "boot", containing the ankle (Campania), the toe (Calabria), the arch (Basilicata), and the heel (Apulia), Molise (north of Apulia) and Abruzzo (north of Molise) along with Sicily, removed from Calabria by the narrow Strait of Messina. Separating the "heel" and the "boot" is the Gulf of Taranto, named after the city of Taranto, which is at an angle between the heel and the boot itself. It is an arm of the Ionian Sea.