Omsk postcards Omsk postcards 1. Omsk. Uspensky Cathedral«200» Омск. Александровская улица. 2. Omsk. The Roman Catholic Church«200» 3. Omsk. The General’s House Of The Governor«200» Omsk is a city and the administrative center of Omsk Oblast, Russia, located in southwestern Siberia 2,236 kilometers (1,389 mi)[8] from Moscow…read more 4. Omsk. The city theatre«200» 5. Omsk. A windmill«200»