The Tiber River is the third-longest river in Italy, stretching about 405 kilometers (252 miles). It flows through the city of Rome before emptying into the Tyrrhenian Sea. The river has played a crucial role in the history and development of Rome, serving as a vital waterway for trade and transportation. The Tiber is known for its picturesque landscapes and historical significance. It is lined with ancient structures, including bridges and embankments, many of which date back to the Roman era. The river also supports various ecosystems, providing habitat for numerous species of fish and birds.