Simplon Yard is built in a traditional residential area of Budapest, which area was mostly developed in the 1930th and in the 1960th. Therefore the building cherishes close relationship with this heritage. The rounded facade at the corner of Bercsényi- and Váli Street is a typical gesture that evokes the architecture of the 1930th, such as the rhythm of the facade appears in many modern buildings of the surroundings from the 1960th. Coffee shop, bank office, grocery, furniture showroom are situated on the ground floor, the apartments, the size of most of which is around 70-80 square meters are placed from the first to fifth floors, finally on the top of the building among roof-gardens, in four separate white pavilions five peculiar penthouse flats of glass-walls are developed. All apartments have large and open facades and all have a well-utilizable, covered terrace or loggia. The large openings of the facade are shaded by aluminium louvers; beside of the sun protection, the additional advantage is that they allows the light in, therefore, they serve as an excellent, and personalised visual filter. The flats can be reached through two vertical cores, which are placed in the two breakpoints of the U-shaped building. Open side corridors heads from the staircases as we considered it useful that in this way the flats could be naturally ventilated from two directions and besides they could be reached in a friendly and well lighted manner. Similar to the old Hungarian tradition you even can chat with the neighbours on the corridor... The open corridors face the miscellaneous internal garden and the overgrown green-wall. We made the internal garden visible for the external observers, too. The southern wings are placed on V shaped legs and through this semi covered public area the building and the city have direct contact. The most important material of the facade is the emailed glass. Yellow, orange, red, green, dark green, blue turquoise and dark blue, they are all vibrant and bright colours. Each colour of the facade belongs to a certain flat; this colour then appears on the entrance door – therefore the mark of the apartment becomes visual- and makes trivial the identification. Certainly the colour of the louvers is the same to the colour of the given flat – if all louvers are down, the building becomes a real box built by coloured “Lego` cubes.