Gipuzkoa (, , ; ; ) is a province of Spain and a historical territory of the autonomous community of the Basque Country. Its capital city is Donostia-San Sebastián. Gipuzkoa shares borders with the French department of Pyrénées-Atlantiques at the northeast, with the province and autonomous community of Navarre at east, Biscay at west, Álava at southwest and the Bay of Biscay to its north. It is located at the easternmost extreme of the Cantabric Sea, in the Bay of Biscay. It has of coast land. With a total area of , Gipuzkoa is the smallest province of Spain. The province has 89 municipalities and a population of 720,592 inhabitants (2018), from which more than half live in the Donostia-San Sebastián metropolitan area. Apart from the capital, other important cities are Irun, Errenteria, Zarautz, Mondragón, Eibar, Hondarribia, Oñati, Tolosa, Beasain and Pasaia. The oceanic climate gives the province an intense green colour with little thermic oscillation. Gipuzkoa is the province of the Basque Country in which the Basque language is the most extensively used since 49.1% of its population spoke Basque in 2006. Etymology The first recorded name of the province was Ipuscoa in a document from the year 1025. During the following years, and in various documents, several similar names appear, such as Ipuzcoa, Ipuçcha, Ipuzka, among others. The full etymology the word Gipuzkoa has not been fully ascertained, but links have been made with the Basque word Giputz, containing the root ip- which is related to the word ipar (north), ipurdi (back) and ipuin (tale). According to this, ipuzko (one of the several first known denominations) might refer to something "to the north" or "in the north". Denominations Gipuzkoa Gipuzkoa is the Basque spelling recommended by the Royal Academy of the Basque Language, and it is commonly used in official documents in that language. The Basque spelling is also mandatory in official texts from the various Spanish public administrations, even in documents written in Spanish. It is the spelling most frequently used by the Spanish-language media in the Basque Country. It is also the spelling used in the Basque version of the Spanish constitution and in the Basque version of the Statute of Autonomy of the Basque Country. Gipuzkoa is also the only official spelling approved for the historical territory by the Juntas Generales of the province. Guipúzcoa Guipúzcoa is the spelling in Spanish, and it has been