In my opinion, one of the most beautiful metro stations in Moscow is Arbatskaya (dark blue line). Completed in 1953, the year of Stalin’s death, it was intended to be used as a bomb shelter, if necessary. Look at that bomb shelter! The long 250 meter platform is also very deep - 41 meters underground. The station represents an example of Stalinist baroque style, its opera clothes include white arched ceilings, bronze chandeliers, ceramic bouquets of flowers, red marble decorations, and glazed tiles. Arbatskaya station can boast a unique design. It was not yet time for austerity and criticism of luxury in Soviet architecture. Up to 1955 metro stations were built on the individual projects. They looked like palaces. Later, between 1955 and 1970 mostly functional aspects prevailed.
Before 1955 in one of the escalator vestibules one could see a mosaic portrait of Stalin (sculptor G. Opryshko).
The same place today: