Apartments in Beirut, by Bernard Khoury

This apartment building is a fine example of how constraints force design into sophistication. The approximately 9 meter (30 ft ) depth of the building imposed a plan of single- loaded rooms along the street façade, which measures is about 18 meter wide. In order to fit 250 m² apartments on the 18m span, the architect split them on two levels and stacked them alternating living rooms and two floors of bedrooms. The liniar terraces on the main façade allow for alternative outdoor access to the rooms. The central part of the terraces benefit from a 4.4 m ceiling height, which creates the possibility for a minuscule garden on each floor. The sixth and seventh floor house a 250m² duplex penthouse, including an ample private terrace on the main street side.
Source: http://www.bernardkhoury.com/