evidence: Olivenza is a walled city of Templar origin located less than 30 kilometers south of Badajoz, on the eastern margin of the Guadiana river, a place that has always been halfway between the rule of the Spanish and the Portuguese. [...] Olivenza It is a municipality that includes several villages such as Saint George of Alor, which stands out for its Alentejo-influenced chimney, Villarreal de Olivenza, with its connection to Guadiana, San Benito de la Contienda, where better Portuguese is spoken. [...] When in 1297 it was integrated into Portugal, Olivenza gains great relevance due to its border position and, above all, for being on the right bank of the Guadiana, since we must remember that the rest of Portugal is on the left bank.