The Tiber Island (Italian: Isola Tiberina, Latin: Insula Tiberina) is one of the two islands in the Tiber river, which runs through Rome; the other, much larger one is called Isola Sacra and is near the mouth of the river at Ostia. Tiber island is located in the southern bend of the Tiber.
The island is boat-shaped, approximately 270 m long and 67 m wide, and has been connected with bridges to both sides of the river since antiquity. Being a seat of the ancient temple of Asclepius and later a hospital, the island is associated with medicine and healing.
The Tiber (LatinTiberis, ItalianTevere, Italian pronunciation: [ˈteːvere]) is the third-longest river in Italy, rising in the Apennine Mountains in Emilia-Romagna and flowing 406 kilometres (252 mi) through Umbria and Lazio to the Tyrrhenian Sea. It drains a basin estimated at 17,375 square kilometres (6,709 sq mi). The river has achieved lasting fame as the main watercourse of the city of Rome, founded on its eastern banks.
The river rises at Mount Fumaiolo in central Italy and flows in a generally southerly direction past Perugia and Rome to meet the sea at Ostia. Popularly called flavus ("the blond"), in reference to the yellowish colour of its water, the Tiber has heavily advanced at the mouth by about 3 km since Roman times, leaving the ancient port of Ostia Antica 6 km inland. However, it does not form a proportional delta, owing to a strong north-flowing sea current close to the shore, to the steep shelving of the coast, and to slow tectonic subsidence.