Located in the attic of a 19th century apartment house, the hidden space of BUREAU A represents the bureau’s activities. It is neither a commercial space nor an industrial loft. Somewhere between a domestic and old craftsman workshop typology, the attic is an introverted volume lighted by an enormous original skylight. The presence of the roof structural wood beams contributes to the slight piranesian feeling of the space. The entrance is ceremonial: either through the old elevator that opens directly in the space or a going up the rustic wooden stair with a greenhouse atmosphere.