Along the entire length of Peninsula and ends on the island of Sicily
That would be Sicily, Italy.
The island to the southeast of the Italian peninsula is Sicily. Its main cities are Palermo, Catania, Messina and Siracusa.
The three main islands of the Italian Peninsula are Sicily, Sardinia, and Capri. Sicily is the largest in the Mediterranean Sea, while Sardinia is the second-largest island and Capri is a smaller island located off the southern coast.
Italy is a peninsula that is in the shape of a boot that looks like it is kicking.
1943 Allies invade island Sicily
The address of the Sicily Island Branch is: 308 Newman Street, Sicily Island, 71368 0266
The three main islands to the west of the Italian peninsula are Sicily, Sardinia, and Corsica. Sicily is the largest island, and it is part of Italy, while Sardinia lies to the north and is also part of Italy. Corsica is located to the north of Sardinia and is a region of France.
The natural region of the Italian peninsula that continues on into Sicily is the Apennine Range. The Apennine Range stretches from the Linguarian Altps to Sicily.
Sardinia and Corsica are the two islands off the western coast of the Italian Peninsula.
Wikipedia describes Sicily as "an autonomous region of Italy".Autonomous, but from my somewhat limited understanding, not entirely independent.
Sicily