The main river flowing through Rome is the Tiber. Known for its historical significance, the Tiber has played a crucial role in the development of the city since ancient times. It serves as a vital waterway for commerce and transportation. The river stretches approximately 252 kilometers (156 miles) and flows through picturesque landscapes. Visitors can enjoy scenic walks along its banks, viewing historic landmarks such as Castel Sant'Angelo and the iconic Ponte Sant'Angelo bridge.