Hermitage Museum private mansions were nationalized and redistributed among major Soviet state museums. Particularly notable was the influx of old masters from the Catherine Palace, the Alexander Palace, the Stroganov Palace and the Yusupov Palace as well as from other palaces of Saint Petersburg and suburbs. In 1922, an important collection of 19th-century European paintings was transferred to the Hermitage from the Academy of Arts. In turn, in 1927 about 500 important paintings were transferred to the Central Museum of old Western art in Moscow at the insistence of the Soviet authorities. In the early 1930s, 70 more paintings were sent there.
Hermitage Museum 1884 in Paris, Alexander III of Russia acquired the collection of Alexander Basilewski, featuring European medieval and Renaissance artifacts. In 1885, the Arsenal collection of arms and armour, founded by Alexander I of Russia, was transferred from the Catherine Palace in Tsarskoye Selo to the Hermitage. In 1914, Leonardo's "Benois Madonna" was added to the collection. Immediately after the Revolution of 1917 the Imperial Hermitage and Winter Palace, former Imperial residence, were proclaimed state museums and eventually merged. The range of the Hermitage's exhibits was further expanded when private art collections from several palaces of the Russian Tsars and numerous