Apartment House Gradaška is situated on the edge of a protected rural enclave on the edge of the city center. It is an independent building subdivided into 12 different and individualised apartments, vertical lofts, which together form a unity that resembles the three-dimensional tetris. The vertical arrangement of these apartments is highlighted by the organisation of the living area, which is oneand-a-half or two storeys high. This displacement makes each unit different from the other eleven, and produces a variety of apartment, clearly demonstrated in the development of the section and readily perceived by passers-by on the street. The facade is made of three different materials: a stone facing, which outlines individual apartments, a combination of reflexive and transparent glass panels which either reflect the surrounding area into the apartment or reveal the interior of the apartment to the surrounding, and a filigree base whose ornamentation throws a reflection of the building’s green to its facade. The thin layer of the facade acts as a mediator, not only between the interior and the exterior, but also between the surroundings of the building and the micro-cosmos of the apartments inside the building. It marks the shift between the rural and the metropolitan living territory of the interior – what we call the »switching surface«. The different urban lifestyles of the interior are externalized through the glass surfaces, and the characteristics of the context are simultaneously projected onto the facade. What is reflected on the facade of the building is basically the same as the view from the interior. Residents will identify their building with the facade reflection of the reality of their surroundings. There are no buffer spaces in this building; there is not even a garden. Instead, a direct and contradictory relationship between very private and very public spaces is established. Thin metal shades monitor the exposure of privacy to the urban scape, creating specific atmosphere of 12 different interiors.