From the Wikipedia page 
The National library of the Netherlands (Dutch: Koninklijke Bibliotheek or KB; Royal Library) is based in The Hague and was founded in 1798. The mission of the National Library of the Netherlands, as presented on the library's web site, is to provide "access to the knowledge and culture of the past and the present by providing high-quality services for research, study, and cultural experience".
King Louis Bonaparte gave the national library its current name in 1806. The institution became independent of the state in 1996, although it is financed by the Department of Education, Culture and Science.
In 2004, the National Library of the Netherlands contained 3,300,000 items, equivalent to 67 kilometers of bookshelves. Most items (2,500,000 books or 48 km) in the collection are books. The collection contains almost the entire literature of the Netherlands, from medieval manuscripts to modern scientific publications. The collection is accessible for members. Any person aged 16 years or older can become a member. One day passes are also available. Requests for material take approximately 30 minutes. The KB hosts several open access websites, including the "Memory of the Netherlands"(Geheugen van Nederland)
More information on the Netherlandish Wikipedia page 
The English language version of the website is .