In its etymological meaning, ecology proposes and argues the theme of home and habitat as an interactive situation of living species. The distinctive features of the urban landscape refer here to the cultural and material heritage and use codes to interpret and assess the characteristics of the cities: historic, suburb or sprawling cities. This analysis does not focus on individual architectural objects, but looks at urban spaces and their relationships between them. The urban regeneration of squares with buildings of worship of this article requires a multidisciplinary approach: to integrate architectural, urbanistic and sociological skills; to understand the cultural and associative dynamics of different communities and the stratification of places. The interactions and flows between the different components of community life are intended for urban textures of public spaces and buildings. Computer science can aid the design process. They are used in computer programs for electronic design and augmented or virtual reality, but their contribution to the analysis of datas in the urban project is still to be developed and implemented. Cases studio are largo Spartaco at Tuscolano in Rome, the Great Mosque of Rome, the Church of SS. Cipriano Cornelio in Calcata, the Catholic Church of SS. Patrizio Giacomo and the Lukiškės square in Vilnius and, Şakirin Mosque and Courtyard in Istanbul.