Yerevan has been the capital of Armenia since 1918 and has a long history dating back to 782 BC when the fortress of Erebuni was founded, making it one of the oldest cities in the world. As the largest city in Armenia, Yerevan sits along the Hrazdan River and serves as the cultural, administrative and industrial center of the country, having become Armenia's principal center for culture, art, industry and national government after World War I.