The climate is mainly Mediterranean (Köppen climate classification Csa), except at the highest elevations (Dsa, Dsb) and the semi-arid eastern stretches in Apulia and Molise, along the Ionian Sea in Calabria and the southern stretches of Sicily (BSw). The largest city of Southern Italy is Naples, an originally Greek name that it has historically maintained for millennia. Bari, Taranto, Reggio Calabria, Foggia, and Salerno are the next largest cities in the area.