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 on permanent display in several small rooms in the northeastern corner of the Winter Palace on the first floor. In 1993, the Russian government gave eastern wing of the nearby General Staff Building across the Palace Square to the Hermitage and the new exhibition rooms in 1999. Since 2003, the Great Courtyard of the Winter Palace has been open to the public providing another entrance to the museum. Also in 2003, the Museum of Porcelain opened as a part of the Hermitage on the basis of the Imperial Porcelain Factory. In December 2004, the museum discovered another looted work of