As early as A.D. 1600, the five towers of the Kremlin were decorated with huge golden double-headed eagles representing Russia. The five towers are: Spasskaya, Nikolskaya, troy Tskaya and Troitskaya. Aya means tower.
After the October Revolution, it was proposed to replace the double-headed eagle symbolizing the imperial power of the Russian Empire with a red five-star. However, due to the huge cost, this plan has not been put into practice in the early days of the Soviet Union when the economy was very difficult.
It was not until August 1935 that a decision was made to replace the two-headed eagle on the four towers before the October Revolution of that year with a red five-star.