Current, accurate and in depth facts on argentina. unique cultural information provided. 35,000 pages countryreports your world discovered!. Argentina's lionel messi celebrates after scoring against ecuador during their 2018 world cup qualifier football match in quito, on october 10, 2017. Buenos aires (/ ˌ b w eɪ n ə s ˈ ɛər iː z / or / ˈ aɪ r ɪ s /; spanish pronunciation: [ˈbwenos ˈai̯ɾes]) is the capital and most populous city of argentina. The office of website management, bureau of public affairs, manages this site as a portal for information from the u.s. state department. external links to other. Argentina world friendly. promoción del turismo en argentina. vení a conocer argentina.