The members of the Collection supply users with information in the field of cartography and provide professional assistance for researchers and students in the preparation and writing of their papers, articles or theses.

[4] The Collection assembles, processes, archives and makes available sheet music, the rich legacy of Croatian composers as well as a large stock of sound recordings.

By 1645 the library was housed in a special hall, it had a librarian and rules were established regarding the preservation and lending of books.

The library and its holdings were moved into an old building of the abandoned Dominican monastery in today's 5 St. Catherine's Square in the Old Town of Zagreb.

As a result of legal deposit regulations introduced in 1816 bearing on the University of Pest, the library's national importance began to increase.

This modern edifice was designed by Croatian architects Velimir Neidhardt, Marijan Hržić, Zvonimir Krznarić and Davor Mance.

[7] For that purpose, 95 million HRK was invested into the preparation of nine conference halls, press center, translators' cabins, videowalls and infirmary; Library was the first building in Croatia fully equipped with 5G network.

[8] On March 19, 2020 Government of Croatia temporarily moved its assemblies from Banski dvori to the Library, just three days before earthquake in Zagreb.