The Royal Library (Danish: Det Kongelige Bibliotek) in Copenhagen is the national library of Denmark and the university library of the University of Copenhagen. It is among the largest libraries in the world and the largest in the Nordic countries. In 2017, it merged with the State and University Library in Aarhus to form a combined national library. The combined library organisation (the separate library locations in Copenhagen and Aarhus are maintained) is known as the Royal Danish Library (Danish: Det Kgl. Bibliotek).