Province of Teruel in the context of Zaragoza Province

The Tagus (/ˈteɪɡəs/ TAY-gəs; Spanish: Tajo [ˈtaxo] ; Portuguese: Tejo [ˈtɛʒu]) is the longest river in the Iberian Peninsula. The river rises in the Montes Universales between Cuenca and Teruel, in mid-eastern Spain, flows 1,007 km (626 mi), generally westward, and empties into the Atlantic Ocean at Lisbon.

The Lobetani (Greek: Lobetanoi), were a small pre-Roman Iberian people of ancient Spain mentioned only once by Ptolemy in the 2nd century AD, situated around the mountainous Albarracín area of the southwest Province of Teruel.

Aragon (/ˈærəɡən/ ARR-ə-gən, US also /-ɡɒn, -ɡoʊn/ -⁠gon, -⁠gohn; Spanish and Aragonese: Aragón [aɾaˈɣon] ; Catalan: Aragó [əɾəˈɣo]) is an autonomous community in Spain, coextensive with the medieval Kingdom of Aragon. In northeastern Spain, the Aragonese autonomous community comprises three provinces (from north to south): Huesca, Zaragoza, and Teruel. Its capital is Zaragoza. The current Statute of Autonomy declares Aragon a historic nationality of Spain.

Covering an area of 47,720 km (18,420 sq mi), the region's terrain ranges diversely from permanent glaciers to verdant valleys, rich pasture lands and orchards, through to the arid steppes of the central lowlands. Aragon is home to many rivers—most notably, the river Ebro, Spain's largest river in volume, which runs west–east across the entire region through the province of Zaragoza. It is also home to the highest mountains of the Pyrenees.

The Turia (Spanish: [ˈtuɾja] ) or Túria (Valencian: [ˈtuɾi.a]) is a river in Spain, which has its source in the Montes Universales in the mountain ranges of the northwesternmost end of the Sistema Ibérico, Teruel province. From its source to roughly the city of Teruel, it is called Guadalaviar (Spanish: [ɡwaðalaˈβjaɾ], Valencian: [ɡwaðalaviˈaɾ]). It runs through the provinces of Teruel, Cuenca and Valencia, and discharges into the Mediterranean Sea near the city of Valencia. The river formerly ran through the center of the city but was diverted south of the city to prevent flooding.
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Tarragona (Spanish: [taraˈɣona]; Catalan: [tərəˈɣonə]) is a province of eastern Spain, in the southern part of the autonomous community of Catalonia. It is bordered by the provinces of Castellón, Teruel, Zaragoza, Lleida and Barcelona and by the Mediterranean Sea.

The province's population is 795,902 (2018), about one fifth of whom live in the capital, Tarragona. Some of the larger cities and towns in Tarragona province include Reus, Salou, El Vendrell, Tortosa, Valls, Amposta. This province has 183 municipalities. The province includes several World Heritage Sites and is a popular tourist destination. There are Roman Catholic cathedrals in Tarragona and Tortosa.

The Turboletae or Turboleti (Greek: Torboletoi or Torboletes) were an obscure pre-Roman people from ancient Spain, which lived in the northwest Teruel province since the early 3rd Century BC.

Castellón (Spanish: [kasteˈʎon]); co-officially in Valencian: Castelló [kasteˈʎo]) is a province in the northern part of the Valencian Community. It is bordered by the provinces of Valencia to the south, Teruel to the west, Tarragona to the north, and by the Mediterranean Sea to the east. The western side of the province is in the mountainous Sistema Ibérico area.