The square opposite the Tony Garnier Hall is divided along its central axis, with one half facing the noisy street and the other facing the neighbourhood. The square is occupied by a single-storey building that accommodates all the neighbourhood’s amenities. On the roof is a large public area that is freely available to residents. The second half faces the neighbourhood and complements the volume of the building with a park that offers plenty of space for nature, games and recreation.

One ramp cuts through the building, the other swings through the park, inviting residents to choose their own path across the building. Some of the uses on the ground floor require high ceilings or zenithal light. These volumes break through the terrace and divide it into zones. In this way, the building connects with the public and the interior use with the exterior.

On the south-east side, facing the Tony Garnier Hall, there is a café that is closely connected to the park. A pergola invites pedestrians to come closer and visit the café, the park or the terrace. On the busy west side, a canopy forms a protected passageway for pedestrians and cyclists. The passage also serves as the delivery entrance to the building.

The supporting structure consists of a series of frames. The frames are superimposed on the volume and thus also form the structure of the terrace. The volumes are clad with a profiled glass façade, which is supported by a steel structure attached to the frames. Where necessary, windows with clear glass are incorporated into the façade structure. The hall is acoustically decoupled by means of a double-shell solid wood construction and does not follow the regular grid.