The National Library of Luxembourg.
'Nationalbibliothéik' is Luxembourgish for national library. It grew out of a school library founded in 1798 and took the name national library in 1899. On 1 October 2019 it moved into its new building here on Kirchberg and changed 'de' to 'du' in its French name: the Bibliothèque nationale du Luxembourg serves the whole country, not just the capital.