This edited volume by Cesare Cundari presents a methodological framework for urban survey in complex systems, introducing a protocol for informative documentation and integrated management of the city as a layered, interacting system. It traces how surveying extends beyond single buildings to networks, infrastructures and spatial‑relations within the urban environment, emphasizing the role of digital tools (including a CD‑ROM) and data modelling in supporting analysis and decision‑making. The work contributes to the field of urban morphology and heritage documentation by bridging traditional drawing‑based methods with GIS, database architectures and system thinking.