Irkutsk

Irkutsk is the largest city and administrative center of Irkutsk Oblast, Russia. With a population of 617,473 as of the 2010 Census, Irkutsk is the 25th-largest city in Russia by population, the fifth-largest in the Siberian Federal District, and one of the largest cities in Siberia.

Located in the south of the eponymous oblast, the city proper lies on the Angara River, a tributary of the Yenisei, about 850 kilometres to the south-east of Krasnoyarsk and about 520 kilometres north of Ulaanbaatar. The Trans-Siberian Highway and Trans-Siberian Railway connect Irkutsk to other regions in Russia and Mongolia.