Is the Tiber River part of Italian Peninsula?

Yes, the Tiber River is part of the Italian Peninsula. The Tiber River is the third longest river in Italy, after the Po River and the Adige River. It flows through the central part of the country, from the Apennine Mountains to the Tyrrhenian Sea. The Tiber River has been an important part of Italian history and culture for centuries, and it is often referred to as the "Eternal River." The river flows through the city of Rome, the capital of Italy, and it is a popular tourist destination. The Tiber River is also a source of water for many cities and towns in the region, and it is also used for irrigation purposes.