The complex of the museum includes the historical rooms, where the main revolutionary events took place in 1917, among them the famouse assambly hall, where the victory of the October revolution was proclaimed in 1917; Lenin's office and living rooms. The visitors can also see the exhibition of "Smolny institute for the girls of noble birth": the atmosphere of the institute wwas restored in 1994, to the 230 annivessary of Smolny institute
Built by Giacomo Quarenghi between 1806 and 1808 as a school for aristocratic girls, the Smolny Institute was thrust into the limelight in 1917 when it became the headquarters for the Bolshevik Central Committee and the Petrograd Soviet. From here, Trotsky and Lenin directed the October Revolution, and in the Hall of Acts (Aktovy zal) on 25 October, the All-Russian Congress of Soviets conferred power on a Bolshevik government led by Lenin.
The Smolny Institute served as the seat of Soviet power until March 1918, when the capital was relocated to Moscow. In 1934, the powerful Leningrad Party chief Sergei Kirov was assassinated in its corridors, on orders from Stalin, ridding the Soviet leader of a perceived rival and simultaneously providing the perfect pretext for the notorious Leningrad purges.