1. "Form and localization" (of human settlement over time): this theme suggests a vision of the evolution of urban morphology in view of the primary choices of the site (from the origin to the recent expansions de-localized), and leads to the reading of the environmental constraints and to the recognition of residual tracks of these deep "engines" of the insediamental development in the current organization of the city, especially through empirical researches starting by the older examples of urban-territorial structure.
2. Exemplification of the historical-topographical method: history of urban development in Sardinia, even to frame the specific case addressed as the design theme of "City and territory" in an precise historical overview.