The Royal Library in Copenhagen is the National Library of Denmark. The Nicknamed of This Library is “Black Diamond” for its architectural profile.
The building houses a cafe and bookshop, and hosts exhibitions and concerts. The mission of the Library is to promote education, research, and information in the present and in the future.
The library was founded in 1648 by King Frederik III. The Library has a Collection of 35,400,000 items (6,400,000 books and journals, 20,000,000 prints and photographs.
1. https://en.wikipedia.org/wiki/Royal_Library,_Denmark
2. https://librarybuildings.info/Denmark/black-diamond-royal-danish-library