1 The two ‘halves’ of New Zagreb Melita Čavlović, Lana Lovrenčić, Antun Sevšek This is an unpublished translation of: Čavlović, Melita, Lana Lovrenčić, and Antun Sevšek. “The two 'halves of New Zagreb.” In Mapping urban changes, edited by Ana Plosnić Škarić, 456-489. Zagreb: Institut za povijest umjetnosti, 2017. This research follows the evolution of the parts of Zagreb determined by and designed according to the changing course of the river Sava. This evolution was a transition from the poorly defined outer limits of the city to a space that has come to be viewed as the centre of its future development. The analysed period is bordered by two turning points in the evolution of technologies used to analyse and notate urban territories. The research begins in the moment this space began to be viewed as a geopolitical territory, while the end represents the moment in which all legal, technical, and planning tools necessary for its urban transformation were formed. Following the conceptual duality and historical interrelationship between the right and left banks of the river, this research tracks the transformation of this territory, together with changes in the value framework through which it was examined. In place of the dominant narrative of CIAM’s urban matrix heroically crossing to the right bank of the Sava, this research offers a reading of this development through the lens of Zagreb’s neighbourhood of Trnje, which proved to be the right bank’s historical antipode and distant starting point. The text is structured chronologically, following the evolution of the space along both the course of the river and its flood banks in accordance with their reciprocal relationship. This urbanological analysis was undertaken by superimposing a series of historical maps, which are treated as a record of natural, economic, and political processes, supplemented with an attempt to place various linear historical narratives within space. This spatial-temporal matrix reveals the complex, mutable relationships