Builders at work: at a construction site, at the device, for welding. Construction of a hydroelectric complex; overlap of the Hangara in the 50s. The construction of the Boguchanskaya hydroelectric power station - blasting operations, a meeting on the laying of the 1st concrete slab. Bratsk hydroelectric power station. Interview of the architect MI Simonov on the street of Leningrad, the architect's workshop. Construction of the Baikal-Amur Mainline. Classes at the school of arts.