|Country||Spain (De facto), Portugal (Claimed)|
|• Mayor||Manuel Cayado Rodríguez (PSOE)|
|• Total||750 km2 (290 sq mi)|
|Elevation||327 m (1,073 ft)|
|• Density||27/km2 (70/sq mi)|
|Time zone||CET (UTC+1)|
|• Summer (DST)||CEST (UTC+2)|
Olivenza (Spanish: [oliˈβenθa]) or Olivença (Portuguese: [oliˈvẽsɐ]) is a town in the autonomous community of Extremadura, situated on a disputed section of the border between Portugal and Spain. Olivenza is claimed by both countries and is currently administered by Spain.
As Olivença, the town was under Portuguese sovereignty between 1297 (Treaty of Alcañices) and 1801 when it was ceded to Spain under the Treaty of Badajoz. Spain has since administered the territory (now split into two municipalities, Olivenza and Táliga), whilst Portugal invokes the self-revocation of the Treaty of Badajoz, plus the Treaty of Vienna of 1815, to claim the return of the territory. In spite of the territorial dispute between Portugal and Spain, the issue has not been a sensitive matter in the relations between these two countries. Olivenza and other neighbouring Spanish (La Codosera, Alburquerque and Badajoz) and Portuguese (Arronches, Campo Maior, Estremoz, Portalegre and Elvas) towns reached an agreement in 2008 to create a euroregion.
Olivenza is located on the left (east) bank of the Guadiana river, at an equal distance of 24 km south of Elvas in Portugal and Badajoz in Spain. The territory is triangular, with a smaller side resting on the Guadiana and the opposite vertex entering south-east and surrounded by Spanish territory. By an agreement between Spain and Portugal, the left bank of the river was recognized as being Portuguese territory (to a non-defined width, though), and sets de facto border in that area.
Besides the town, the municipality of Olivenza includes six villages: San Francisco, San Rafael, Villarreal, Santo Domingo de Guzmán, San Benito de la Contienda, and San Jorge de Alor (Portuguese: São Francisco, São Rafael, Vila Real, São Domingos de Gusmão, São Bento da Contenda, and São Jorge da Lor). Another village, Táliga, was detached to become the seat of a separate municipality in 1850.
Total population is 10,762 (2002), of which 8,274 live in Olivenza. The total area is 750 km². Like the surrounding regions, population density is low, at 11 inhabitants per km².[The Mayor is Bernardino Piriz]
Some monuments include the Saint Mary of the Castle Church (Spanish: Iglesia de Santa María del Castillo, Portuguese: Igreja de Santa Maria do Castelo), Holy Ghost Chapel (Capilla del Espíritu Santo, Capela do Espírito Santo), Saint Mary Magdalene Church (Iglesia de Santa María Magdalena, Igreja de Santa Maria Madalena, considered a masterwork of Portuguese Manueline architecture), Saint John of God Monastery (Monasterio de San Juan de Dios, Mosteiro de São João de Deus), the keep (torre del homenaje, torre de menagem), and the ruins of the Our Lady of Help Bridge (Puente de Nuestra Señora de Ayuda, Ponte de Nossa Senhora da Ajuda, destroyed in 1709 and never rebuilt).
There are still traces of Portuguese culture and language in the people, although the younger generations speak Spanish only. Famous people born in Olivenza include Cardinal Pedro da Fonseca (?-after 1419) and music composer Vicente Lusitano (?-after 1561).
- 1170 - Olivenza region falls for the first time into Portuguese hands during the conquests of Afonso Henriques, the first king of Portugal.
- 1189 - Muslims retake the region.
- 1230 - The Olivenza area (as part of the Badajoz surroundings) is taken from the Muslims by the Knights Templar.
- 1259 - The Knights Templar, reborn as a different order in Portugal, and under authorization of the Portuguese King, create the first settlement that can be identified as the origin of the town of Olivenza.
- 1278 - Olivenza and the surrounding area is nominally granted by King Alfonso X of Castile to the Bishopric and Council of Badajoz.
- 1297 - After the critical situation created in Castile with the death of King Sancho IV, King Dinis of Portugal forces King Ferdinand IV to sign the Treaty of Alcanizes and recognize, amongst other possessions, Olivenza as being Portuguese. On the other hand, several Portuguese controlled territories in nowadays Spanish Andalusia are defined as belonging to Castile, namely Aroche and Aracena.
- 1298 - King Denis of Portugal grants Olivenza a foral (charter), and new city walls are built.
- 1510 - King Manuel I of Portugal renews the town charter and orders the building of fortifications and the Olivenza Bridge (Ponte de Olivença, later known as Ponte de Nossa Senhora da Ajuda (Our Lady of Help Bridge) or, simply as Ajuda bridge), on the road to Elvas. Construction of Santa Maria Madalena Church begins. This church would be the residence of the Bishop of Ceuta for many years.
- 1668 - Treaty of Lisbon between Spain and Portugal reaffirms the borders defined in the Treaty of Alcanizes of 1297.
- 1709 - During the War of the Spanish Succession, the Olivenza Bridge is destroyed by Spanish forces. Its ruins remain until today.
- 29 January 1801 - France, allied to Spain, demands Portugal, British ally since the Anglo-Portuguese Treaty of 1373, to enter into an alliance with France in the war against Britain. Portugal refuses.
- 27 February 1801 - The brief War of the Oranges begins, with the French troops marching on Portugal, later followed by Spanish troops.
- 20 May 1801 - Spanish troops occupy, among other towns, Olivenza.
- 6 June 1801 - The war is over with the simultaneous signing of two treaties in Badajoz, Spain, the first between France and Portugal, and the second between Spain and Portugal. As both treaties mention each other and share common clauses, they are frequently referred to as just the Treaty of Badajoz. Under one of the terms of the Treaty, Spain gives back all the occupied towns except those on the left bank of the Guadiana river (the territory of Olivenza), which are ceded by Portugal to Spain, including its inhabitants, on a 'perpetual' basis. The Treaty also stipulates that the breach of any of its articles leads to its cancellation.
- 29 September 1801 - The treaty is signed again, this time in Madrid, with slight modifications demanded by France, but not affecting the stipulated for Olivenza.
- 26 January 1805 - The Portuguese currency is forbidden.
- 20 February 1805 - Teaching in Portuguese is forbidden.
- 14 August 1805 - Adoption of the Spanish language in city hall documents.
- July 1809 - Portugal presents to the Junta Central, in Seville, an official order of restitution of the territory of Olivenza.
- 19 February 1810 - Treaty of alliance and friendship between Portugal and Britain, whereby Great Britain pledges to help Portugal to regain possession of Olivenza, in turn receiving the exploration of the Portuguese establishments of Bissau and Cacheu for a period of 50 years.
- Portugal starts negotiating a treaty with the Regency Counsel of Spain, whereby Olivenza should be given back to Portugal.
- March - French general Soult takes Olivenza.
- 15 April 1811 - Beresford, a British marshall with the rank of Head General of the Portuguese Army, briefly retakes Olivenza.
- 19 May 1813 - The remaining Portuguese language private schools are closed by the Spanish authorities.
- 30 May 1814 - The Treaty of Paris between France and the allied countries (including Portugal) includes a provision declaring the 1801 treaties of Badajoz and Madrid null and void. Spain is not a part of this agreement.
- 9 June 1815 - The Portuguese delegation to the Congress of Vienna, led by Pedro de Sousa Holstein, succeeds in including article 105 in the Final Act (aka the Treaty of Vienna), stating that the winning countries are to endeavour with the mightiest conciliatory effort to return Olivenza to Portuguese authority. The Spanish representative to the Congress, Pedro Gomes Labrador, refuses to sign the Treaty, registering a protest against several of the Congress resolutions, including article 105.
- 27 October 1815 - Expecting the quick restitution of Olivenza, Prince Regent John nominates José Luiz de Sousa as Plenipotentiary.
- 7 May 1817 - Spain finally signs the Treaty of Vienna, since, in the Spanish interpretation, the text is not mandatory on demanding Spain to return Olivenza to Portugal. However, the text clearly states that all the signatary winning powers promise to take all efforts to make sure that Olivenza is returned to Portugal.
- 7 November 1820 - Spanish authorities forbade the use of private teaching in Portuguese.
- 1821 - Portugal annexes Uruguay. In reaction, Spain withdraws from the Olivenza talks.
- 1840 - The Portuguese language is forbidden in the territory of Olivenza, including inside churches.
- 1850 - The village of Táliga is separated to form its own municipality.
- 1858 - Isabel II of Spain grants the title of City (Ciudad) to Olivenza.
- 29 September 1864 - The Treaty of Lisbon (1864) between Portugal and Spain is signed, demarcating the border from the estuary of the Minho river, on the far North, to the confluence of the Caya River with the Guadiana river, just north of Olivenza. The demarcation of the border is not pursued further because of the situation of Olivenza.
- 1918/1919 - With the end of World War I, the Portuguese government studies the possibility of taking the situation of Olivenza to the Paris Peace Conference. However, as Spain had not participated in the War, the intervention of the international community in this issue is not possible.
- 29 June 1926 - Portugal and Spain sign an agreement demarcating the border from the confluence of the Cuncos river with the Guadiana, just south of Olivenza, to the estuary of the Guadiana, on the far South. The border between Portugal and Spain from the confluence of the Caya river to the confluence of the Cuncos is not demarcated and remains so nowadays, with the Guadiana being the de facto border.
- 1936–1939 - During the Spanish Civil War, Portuguese Colonel Rodrigo Pereira Botelho volunteers to occupy Olivenza. The 8th Portuguese Regiment, stationed in nearby Elvas, prepares to take Olivenza but is ordered not to.
- 15 August 1938 - The Pro-Olivenza Society (Sociedade Pró-Olivença) is founded, the first of a number of pressure groups established to advance the cause of Olivenza in Portugal.
- 1954 - Oliventine children are no longer allowed to take free holidays in the Portuguese seaside resort "Colónia Balnear Infantil d'O Século", managed by a newspaper owned charity.
- 24 January 1967 - The Portuguese government declares the Olivenza Bridge a National Heritage Monument.
- 1968 - A covenant between Portugal and Spain on exploitation of hydraulic resources in the frontier rivers is signed. All frontier rivers (including the non-demarcated section in the Guadiana river) are covered, distributing the hydraulic exploitation between both countries. The hydraulic exploitation of the non-demarcated section in the Guadiana river is assigned to Portugal (in the same way as the rights on hydraulic exploitation over other frontier rivers are assigned either to Portugal or to Spain). The only difference between this section and the rest is that the term "international" is omitted (all the sections are named "international section" but the non-demarcated one in the Guadiana river).
- 1977 - A Treaty of Friendship and Cooperation between Spain and Portugal is signed, with no mention to the Olivenza claim.
- 1981 - Former prime-minister of Portugal, Admiral Pinheiro de Azevedo publishes a book on Olivenza and visits the town, leading Spain to send a contingent of the Civil Guard (Guardia Civil) to prevent any confrontation.
- 1994, November - After internal criticism that the agreement of 1990 would mean the recognition of the de facto border by the government of Portugal, the agreement is modified in another Iberian Summit. Portugal is now in full charge of constructing the new bridge and preserving the old bridge, therefore not putting the Portuguese claim to the territory of Olivenza at stake.
- March 1995 - The Portuguese government sends its Spanish counterpart a study on the effects of the construction of the Alqueva Dam on Spanish territory. Information on Olivenza is not included. Later, Portugal sends further information, including data on Olivenza, under the title "Territory of Spain and Olivenza".
- October 1999 - The Spanish police stop preservation works being undertaken by the Portuguese on the old Olivenza Bridge on the left bank (Spanish side) of the Guadiana river. The Portuguese had been working on that side of the bridge without Spanish permits assuming that the left bank-side of the Guadiana river belonged to Portugal, according to the 1968 covenant. In subsequent events, a Portuguese court order prevents Spain from taking over the works.
- 11 November 2000 - The new Olivenza Bridge, constructed by Portugal, is inaugurated.
- Spain restarts work on the old bridge, under protest from the Portuguese government.
- 25 June 2004 - The Portuguese parliament raises the issue of Olivenza and exhorts the Minister of Foreign Affairs to try to solve the question, in a friendly and cooperative way, with Spain and the people of Olivenza, within the European Union.
- 4 September 2004 - The Portuguese Minister of Foreign Affairs, Antonio Martins da Cruz states that the Olivença issue "is frozen".
- 7 September 2004 - The Government of the autonomous community of Extremadura declares the old Olivenza Bridge a Heritage Monument.
- 2007 - Guillermo Fernandez Vara, who was born in Olivenza, is elected president of Extremadura.
- 2010 - The ancient Portuguese street names, that were removed in the first half of the 20th century, return to the historical city center of Olivença.
Claims of sovereignty 
Olivenza was under Portuguese sovereignty since 1297 until it was occupied by the Spanish in 1801, and formally ceded by Portugal, after being invaded and defeated by Spain at the War of the Oranges, later that year by the Treaty of Badajoz.
Spain claims the de jure sovereignty over Olivenza on the grounds that the Treaty of Badajoz still stands and has never been revoked. Thus, the border between the two countries in the region of Olivenza should be as demarcated by that treaty. Though, the terms of the very Treaty of Badajoz undoubtedly state that if war was ever to again occur between the two countries, then the Treaty would be void. And that happened when Spain itself later invaded Portugal.
Portugal claims the de jure sovereignty over Olivenza exactly evoking the same Treaty of Badajoz, since it was revoked by its own terms (the breach of any of its articles would lead to its cancellation) when Spain invaded Portugal in the Peninsular War of 1807. Portugal further bases its case on Article 105 of the Treaty of Vienna of 1815, which Spain signed in 1817, that states that the winning countries are to "endeavour with the mightiest conciliatory effort to return Olivenza to Portuguese authority". Thus, the border between the two countries in the region of Olivenza should be as demarcated by the Treaty of Alcanizes of 1297.
Spain interprets Article 105 as not being mandatory on demanding Spain to return Olivenza to Portugal, thus not revoking the Treaty of Badajoz.
Portugal has never made a formal claim to the territory after the Treaty of Vienna, but has equally never directly acknowledged the Spanish sovereignty over Olivenza.
There is no research on the opinion of the inhabitants of Olivenza about their status. Spanish public opinion is not generally aware of the Portuguese claim on Olivenza (in contrast to the Spanish claim on Gibraltar or the Moroccan claims on Ceuta, Melilla and the Plazas de soberanía). On the other hand, awareness in Portugal has been increasing under the efforts of pressure groups to have the question raised and debated in public.
See also 
- Rongxing Guo, Territorial Disputes and Resource Management: A Global Handbook, Nova Science Publisher/New York, 2007
- Portugal desmiente a la CIA y niega que haya un conflicto por Olivenza (Spanish)
- Martins da Cruz Afirma Que a Questão de Olivença "Está Congelada" (Portuguese)
- Europacto en la frontera hispano-lusa (Spanish)
- Euroregião e Declaração de Olivença (Portuguese)
- Margarida Garcez Ventura, A Definição das Fronteiras, Ed. Quidnovi, Matosinhos/Lisbon, 2007, ISBN 978-972-8998-85-1
- António Pedro Vicente, Guerra Peninsular, Ed. Quidnovi, Matosinhos/Lisbon, 2007, ISBN 978-972-8998-86-8
- in António Ventura, Guerra das Laranjas, Ed. Quidnovi, Matosinhos/Lisbon, 2008, ISBN 978-989-628-075-8, the text of the Treaty of Badajoz: "[Preamble] [...] dois Tratados, sem que na parte essencial seja mais do que um, pois que a Garantia é recíproca, e não haverá validade em alguns dos dois, quando venha a verificar-se a infracção em qualquer dos Artigos, que neles se expressam. [...] Artigo I: Haverá Paz [...] entre Sua Alteza Real o Príncipe Regente de Portugal, e dos Algarves, e Sua Majestade Católica El-Rei de Espanha, assim por mar, como por terra em toda a extensão dos seus reinos [...]. Artigo III: Sua Majestade Católica [...] conservará em qualidade de Conquista para unir perpetuamente aos seus Domínios, e Vassalos, a Praça de Olivença, seu Território, e Povos desde o Guadiana; de sorte que este Rio seja o limite dos respectivos Reinos, naquela parte que unicamente toca ao sobredito Território de Olivença. [...] Artigo IX: Sua Majestade Católica se obriga a Garantir a Sua Alteza Real o Príncipe Regente de Portugal a inteira conservação dos Seus Estados, e Domínios sem a menor excepção, ou reserva. [...]"
- Jewish Political Studies Review, Volume 16, Issues 1-4, p. 44
- Instrumento de ratificación del Convenio y Protocolo adicional entre España y Portugal para regular el uso y aprovechamiento hidráulico de los tramos internacionales de los ríos Limia, Miño, Tajo, Guadiana y Chanza y sus afluentes, firmado en Madrid el 29 de mayo de 1968.. Article III states:
El aprovechamiento hidráulico de las siguientes zonas de los tramos internacionales de los restantes ríos mencionados en el artículo primero será distribuido entre España y Portugal de la forma siguiente:
E) Se reserva a Portugal la utilización de todo el tramo del río Guadiana entre los puntos de confluencia de éste con los ríos Caya y Cuncos, incluyendo los correspondientes desniveles de los afluentes en el tramo.
In the same article, sections A and B are assigned to Portugal, while C, D and F are assigned to Spain.
- Instrumento de ratificacion de España del Tratado de Amistad y Cooperacion entre España y Portugal, hecho en Madrid el dia 22 de noviembre de 1977 (Spanish).
- Martins da Cruz Afirma Que a Questão de Olivença "Está Congelada" (Portuguese), Público.
- [«Una cuestión congelada», según Portugal http://www.abc.es/hemeroteca/historico-15-09-2003/Nacional/una-cuestion-congelada-segun-portugal_207522.html] (Spanish), ABC, September 15, 2004
- RESOLUCIÓN de 6 de septiembre de 2004, de la Consejería de Cultura, por la que se incoa expediente de declaración de bien de interés cultural, para el puente de Ajuda en la localidad de Olivenza (Badajoz) (Spanish).
- http://dn.sapo.pt/inicio/portugal/interior.aspx?content_id=1590520&seccao=Sul (Portuguese)
- Jefferies, Anthony (19 August 2006). "The best of both worlds". Daily Telegraph (Telegraph Media Group). Retrieved 19 February 2010.
- Mora, Miguel (4 December 2000). "La eterna disputa de Olivenza-Olivença". El País (in Spanish) (Ediciones El País, S.L.). Retrieved 19 February 2010.
- Caetano, Filipe (18 January 2008). "Cimeira Ibérica: Olivença ainda é questão?". IOL Diário (in Portuguese) (Media Capital Multimedia). Retrieved 19 February 2010.
- (English) CIA World Factbook reference to Olivenza in the "Disputes - international" section on the Spain page
- (Portuguese) Official Map of Portugal with Olivenza IGEOE
- (English) Official portuguese statements GAO
- (English) CIA World Factbook reference to Olivença in the "Disputes - international" section on the Portugal page
- (Spanish) Olivenza in the official website of the Province of Badajoz
- (Spanish) Olivenza in the official website for Tourism in the Region of Extremadura
- (English) Website for Portuguese pressure group "Group of Friends of Olivenza"
- (English) images of Olivenza and its municipality
- Portuguese, Spanish Website for Oliventino cultural group Alemguadiana
- English, Portuguese Map of Portugal
- (English) If Spain wants Gibraltar, when is it planning to give up Olivenza?