Advances in technology have made it possible to improve the knowledge of the characterization and behavior of masonry structures with a minimum invasion. This study aims to create a new approach to built heritage conservation by integrating and optimizing the data obtained through the application of different technologies. Throughout the study, the survey work was supported by digital technologies and non-destructive testing equipment. The work proposed approach was applied in a UNESCO World Heritage Site: The Monastery of Batalha, in Portugal. The results of the work resulted in a geometric and pathological survey and characterization of the masonry, leading to a structural health monitoring system composed of different sensor technologies. This works shows how the integration of the data collected allows to reach a better understanding about the state of conservation of the built heritage. Finally, the results are gathered in an integrated platform that constitutes a digital heritage twin of the Monastery of Batalha.