The building is composed of different layers. The first layer, made of thin crossbars, protects from the sun and the outside perturbations. It brings intimacy to the building designed for reading and concentrating.

The second one, a glass box, shelters the public spaces, the lobby and the reading areas. The third one, opaque, encloses the store rooms, the “treasure” of the building, the technical areas and staff rooms. 

The light penetrates the building from everywhere. When it is filtered, it animates the space with playful contrasts between shadow and light.

The building seems light and ethereal thanks to the fragmentation of the structure. The structure is made of many small elements creating rhythms, frames, filters and different angles of vision depending on the location of the visitor in the space: this creates a kinetic vision of the construction.

Unusual and attracting, round and soft like pebbles, the “magic boxes” are shelters where the visitor could withdraw, think and use their imagination.

The strong box- treasury chest is a concrete box protecting the archives from the sunlight, enclosing sanitation and staff rooms. Along the reading area, a long wall of blinds, made of prefabricated white panels, enables to vary the lighting of the premises.

Open and light, the reading spaces and lobbies are spread on the whole length of the glass box.