Film about the Polytechnic Museum. City of Moscow. The movement of cars and trolleybus through the streets of Moscow at night, Kalininsky Prospekt. Passers-by on Kalininsky Prospect in the evening, it is raining. Passers-by on busy streets and intersections in the city center during the day. Traffic light. People in pay phone booths. Transport movement on the square in front of the museum building. Museum building. Halls and expositions of the museum, types of individual exhibits (night and day shooting). Documents on the history of the museum. The halls of the automotive industry, the history of musical instruments, time devices, electrical engineering, radio engineering, television, photography. Guides lead excursions, talk about the museum's collection (synchronously and behind the scenes). Schoolchildren on excursions to the museum. Chronicle footage: Moscow, before 1917, one of the streets, a car is passing by, a queue to a store, the 1920s, the movement of a tram, a bus, cabbies, pedestrians, V.I. Lenin near the building of the Polytechnic Museum, 1930s. , car races, V. Mayakovsky reads poetry, 1960s, passage and races of old cars, audience at a poetry evening at the Polytechnic Museum. Chronicle footage: people are listening to a gramophone, a record is spinning.