The Royal Library in Copenhagen, Denmark (Danish: Det Kongelige Bibliotek), is the national library of Denmark and the university library of the University of Copenhagen. It is the largest library in the Nordic countries.
The library was founded in 1648 by King Frederik III, who contributed a comprehensive collection of European works. It was opened to the public in 1793.
In 1989, it was merged with the prestigious Copenhagen University Library (founded in 1482) (UB1). In 2005, it was merged with the Danish National Library for Science and Medicine (UB2), now the Faculty Library of Natural and Health Sciences. The official name of the organization as of 1 January 2006 is The Royal Library, the National Library of Denmark and the Copenhagen University Library. In 2008, the Danish Folklore Archive was merged with the Royal Library.
It contains numerous historical treasures; all works that have been printed in Denmark since the 17th century are deposited there. Thanks to extensive donations in the past the library holds nearly all known Danish printed works back to the first Danish book, printed in 1482.
More information on the Wikipedia page 
The English language version of the website is .