Irkutsk is the capital of Irkutsk Oblast, Russian Federal Republic.It's the second largest city East Siberia, which covers an area of 360 square meters. Besides, Irkutsk, which owns a population of about 800,000, is one of the most populous cities of Siberia. Shenyang officially established the sister city relationship with Irkutsk on August 12, 1992. It's the 6th sister city of Shenyang.