The National Archives of the Netherlands in The Hague, which was built in the 1970s using a reinforced concrete structure, faced many problems now. The functional requirements of decades ago have been saturated, and the lack of architectural space necessitated a new renovation of the building. The design is aimed to make the entire building "light". The "lightness" here is not only the visual perception of the building volume, but also the "lightness" of the entire building energy system and construction process. Wood is chosen as the main material in the project to form a light structure system based on the original concrete building, creating a different spatial experience and environment for the citizens.