Yekaterinburg, alternatively romanized Ekaterinburg, is the fourth-largest city in Russia and the administrative centre of Sverdlovsk Oblast, located on the Iset River east of the Ural Mountains, in the middle of the Eurasian continent, at the boundary between Asia and Europe. It is the main cultural and industrial center of the oblast. In 2017, it had an estimated population of 1,488,791. Yekaterinburg has been dubbed the "third capital of Russia", as it is ranked third by the size of economy, culture, transportation and tourism. It is located about 1,420 kilometres (880 mi) to the east of Moscow.