The apartment is part of the wider area of the historical Acropolis of Athens, and morphologically gathers the basic architecture elements of a typical interwar housebuilding. The modern spirit of the house’s first architecture synthetic lines, both in the main façade and in the floor plan, passes to the new constructions of the renovation – in the bookcase, in the living room furniture and in the dining room furniture. The diversity and the truth to materials, the play in pure proportions, the strict geometries and the simplicity of the forms, maintain the modern interwar character of the house, giving a creative dimension to the requested urban uses. The plasticity of the new structures, transforms the content of usual furniture in an atmospheric spatial condition, without being detached units but extensions of the existing architecture shell. The bookcase brings together individual materials – thin metal sheet, pleated and perforated surfaces, and wooden elements – in an overall sculptural modern composition. The grid of the usual uses of the bookcase includes two metal complementary semicircles which connect the two sides of the integration space. In the living room, the chosen materials – colored marbles, a rough marble rock, a surface of processed concrete, and a rectangular shape of white thin metal – enrich the overall dialogue of the materials, giving a more special and significant character to the new constructions. The conventional uses of a surface (TV cabinet, shelves, side table) are an occasion for a more artistic design, that the materials themselves constitute a special spatial theatrical atmosphere. In the dining area, the second self-library furniture is an extension of the existing wall, with sculptural openings, and in inherent dialogue with the finesse of the kitchen façade’s materials.