The Trans-Siberian Railway City is Omsk, a city located in southwestern Siberia, Russia. It is the administrative center of Omsk Oblast and is situated on the banks of the Irtysh River. Omsk is the second largest city in Siberia after Novosibirsk and the seventh most populous city in Russia. It is an important industrial, cultural, and educational center in the region. The Trans-Siberian Railway passes through Omsk, connecting it to other major cities in Russia and beyond.