The term Southern Siberian City refers to the city of Omsk, which is located in southwestern Siberia, Russia. It is the second-largest city in Siberia and the seventh-largest city in Russia. Omsk was founded in 1716 as a fortress on the banks of the Irtysh River and has since grown into a major industrial, cultural, and educational center. It is also an important transportation hub, with a major airport and railway station.