The apartment tower Nano is located in city Nantes. Nano offers a wide range of apartment types and thus responds to the diversity of lifestyles and housing needs in Nantes. The stacked volumes reacts to environment office and residential development. A wide variety of apartments:studios, panoramic lofts, loft apartments and skylofts. The aim of the project was to create a point of attraction, the building was functionally designed as an apartment for temporary rental and housing of office workers.In accordance with the principles of the aesthetic form of use, this network of balconies, random in appearance with its play of single and double heights, is organized on the rational structure of floor plans. This staggered arrangement enlivens the facades, promotes sunlight in the apartments and streamlines the surface of the balcony.