The situation of the "Urban Leftover" caused by the errection of linear building types -the so called "Zeile"- after World War II is obvious in over 100 locations in the former West Berlin, Germany. The radical modern urban concepts of erasing the historic structure of the city -in which context the Zeile was erected were never completly realized. This mixed structure of the traditional Block and Zeile caused the open corner condition and have become an unused urban leftover today. This thesis project studies the phenomenon of the open corner and tries to offer an answer to this urban question. / Master of Architecture