The Rio Mondego (Portuguese pronunciation: [mõˈðeɣu]; English language: Mondego River) is the longest river located exclusively in Portuguese territory. It has its source in Serra da Estrela, the highest mountain range in mainland Portugal (i.e. except the Portuguese islands). It runs 234 km from the Gouveia municipality (at 1425 meters) in Serra da Estrela, to its mouth into the Atlantic Ocean next to the city of Figueira da Foz. It flows through the districts of Guarda, Viseu and Coimbra, all in Centro Region. It flows near the towns of Celorico da Beira, Fornos de Algodres, Nelas, Tabua, Carregal do Sal, Mortagua, Montemor-o-Velho and cities of Seia, Gouveia, Guarda, Mangualde, Santa Comba Dao, before crossing the town of Penacova, is narrow, then widens by the city of Coimbra (with the University and the major urban area in Baixo Mondego), and the Montemor-o-Velho municipality (known for its castle and rice fields), before reaching the Atlantic at the city of Figueira da Foz.