Since 2021, I have been photographing spaces in transition in the Parisian suburb of Nanterre, situated next to the Paris-La Défense business district. The urban environment is heteroclite, resulting of many construction phases. Named Zone B during the establishment of the neighboring business district project of Paris-La Défense in 1956, there where at the time many brownfield areas occupied by shantytowns where lived immigrant workers. Many social housing complexes were built to house this population starting in the 1960's. From the 1970 onwards office buildings associated to the closeby business district were constructed. Today, new office zones are emerging. Few inhabitants of the town work there, belonging to lower socio-professional categories. New private housing is also being constructed to diversify the population. The first impression was of many thresholds between office and housing blocks, made of disparate architecture, of different styles and periods, with the presence of many construction sites. Some places photographed during the summer of 2023 bear the marks of the urban riots that took place there. The photographs concentrate on the traces of urban transformation, on the condition of the buildings and spaces, to suggest the differences and tensions between those destined for living or working, and implicitely, between populations. The spaces represented become silent, on hold, to question their status, function, perennity and adaptation to human activities.