Helicopter over the taiga. River. Says Academician, Vice-President of the USSR Academy of Sciences A. L. Yanshin. Photographs (the old city of Smolensk). Locomotive. Railway station. Kalanchevskaya square. Classes at Moscow State University in the 20s. Demonstration of builders in Magnitogorsk. Construction of a metallurgical plant. Loading rock onto platforms. The city of Moscow during the war years. Locomotive. Photos by A. Yanshin, geologists, actress Koonen. Wheat harvesting. Pumping unit at a salt plant. Drilling rig in the taiga. The building of the Presidium of the USSR Academy of Sciences.