Where are the Po and Tiber rivers in Europe?

* Country: Italy

* Length: 652 km (405 miles)

* Source: Monviso mountain in the Cottian Alps

* Mouth: Adriatic Sea

Tiber River:

* Country: Italy

* Length: 405 km (252 miles)

* Source: Fumaiolo mountain in the Apennine Mountains

* Mouth: Tyrrhenian Sea