The Museum of St. Petersburg Art (20th–21st centuries) is a depository of a unique collection representing productions of the artists of Russia’s Cultural Capital. At present, the collection has ca. 3,000 items, covering the entire Petrograd-Leningrad-St. Petersburg period in the history of arts. It includes works of different styles and trends, created in the city in the course of two centuries, viz. the Avant-Garde of the 1920s, post-WW-II Socialist Realism, the ‘left wing’ of the Artists’ Union and the Underground of the 1960s–70s, and up to the post-Perestoika period and nowadays.