evidence: Olivenza – The Spanish-Portuguese border town with a shared history and heritage [...] Olivenza (Spanish) or Olivença (Portuguese) is a town located in southwestern Spain, near the Portuguese border, on a historically disputed section of the Portugal–Spain border. [...] The town of Olivenza was under Portuguese sovereignty almost continuously between 1297 (Treaty of Alcañices) and 1801, when it was occupied by Spain during the War of the Oranges and ceded that year under the Treaty of Badajoz.