Abstract
The paper introduces a brief analysis of the historical processes that have contributed to the paralysis and degradation of downtown Phnom Penh (capital of Cambodia). It shows the impossibility of implementing stringent regulation in favor of negotiating practices among various urban actors based on relationships established by social and economic subordination and culturally embedded in the population. It seems that these unavoidable mechanisms should be explored to devise strategies aimed instead at the redevelopment of green space and the consequent valorization of historic real estate, creating a stimulus for the emergence of public-private cooperation capable of supporting the necessary investments. The paper discusses the actual situation in the city of Phnom Penh and tries to indicate possible solution in order to make a compromise between the conservation of the historical centers, or what is left of it, and a socially useful rehabilitation of the districts. A more pragmatic and sustainable operation will mitigate the risk of fragmentation or worse the disappearance of the historic fabric, focusing on the once-recognized identity of the city, considered a "green garden" and the "pearl of Asia." To support the analysis carried out in the paper some reference from other similar experiences in other city in the world are presented.