The project discusses the topic on how to design within inner cities where there is an enormous lack of building ground. Cities must densify throughout the years. To successfully achieve this, architects could expand on top of existing buildings. By building stories on top of existing buildings architects could extend the lifespan of buildings with a non-destructive approach. Due to reconstruction over time spaces in cities have become harsh, neglected and unused public spaces. For this project, the used method was to preserve the original historic pattern while using a new modern architectural language. The ambition, to ultimately design a building by reconstructing from the past while using knowledge from the present. In brief, to engineer a building with a sustainable impact on the environment.