Baikonur. So familiar yet mysterious at the same time. Everyone has heard about it, but almost no one knows how and by whom the first spaceport on the planet was built. Today's everyday life of the cosmodrome is no less striking than its history. The film crew visited the giant oxygen plant, Start No. 31, from which the Challenge project was flown, the communication complex with the ISS, the hardware complex of the emergency rescue system.