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 created the Pavilion Hall in the Northern Pavilion of the Small Hermitage in 1851–1858. Until the 1920s, the museum's entrance was under the portico supported by five-metre high atlantes of grey Serdobol granite from Finland in the middle of the southern facade of the New Hermitage building. In 1861, the Hermitage purchased from the Papal government part of the Giampietro Campana collection, which consisted mostly classical antiquities. These included over 500 vases, 200 bronzes and a number of marble statues. The Hermitage acquired "Madonna Litta", which was then attributed to Leonardo, in 1865, and Raphael's "Connestabile Madonna" in 1870. In