The Rio Tajo, also known as the Tagus River, is the longest river in the Iberian Peninsula, flowing approximately 1,007 kilometers. It originates in the Sierra de Albarracín mountains in Spain and travels through several cities, including Toledo and Lisbon, before emptying into the Atlantic Ocean. The river plays a crucial role in the ecosystems and economies of the regions it traverses. It provides water for agriculture, supports local wildlife, and serves as a transportation route. The Tagus River is also a popular destination for recreational activities such as fishing and boating.