Russian State Library

Not to be confused with the Russian National Library, located in St Petersburg.

The Russian State Library (Russian: Российская государственная библиотека) is the national library of Russia, located in Moscow. It is the largest in the country and the third largest in the world for its collection of books (17.5 million). It was named the V. I. Lenin State Library of the USSR from 1925 until it was renamed in 1992 as the Russian State Library.

More information on the Wikipedia page