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The house and farm of Valflores, located near Lisbon, are an important evidence of the Portuguese Renaissance civil architecture from the first half of 16th century, built by Jorge de Barros, the overseer of the Portuguese king, D. João III, in Flanders. Its style has its roots in Italian villas. As was common at that time, the property was a villeggiatura site. In 1982 the house and the farm were listed as property of public interest. In 2000 the property was inserted in a Portuguese list of heritage at risk and in 2001 the property was in a state of pre-ruin. It was bought by the municipality in 2006. After 2007 a partnership between a Local Heritage Association (ADPAC), the Municipality of Loures and the Lisbon School of Architecture developed a series of initiatives for the safeguard and restoration of this Heritage. Several studies were performed, including multiple three-dimensional surveys on several occasions. Ultimately, these studies led to the development of a restoration project in 2016 for European funds application. At the present date, the restoration works are going on. The objective of this paper is the discussion of how three-dimensional documentation played a fundamental role on the several stages of this process, namely after 2007, permitting to gain insights about metrics, space and form distributions, deformations, structural condition, state of conservation, history, and allowing dissemination and public engagement.

This paper discusses the graphical data flow, based on terrestrial laser scanning (TLS) and photogrammetry, for the conservation and rehabilitation project of the Fortress of Juromenha, located nearby the Portuguese-Spanish border in the Alentejo Province. First, we describe the strategy of data acquisition including GPS positioning, drone imagery, ground based imagery, and TLS survey. For the data input, this study considers two types of natures: quantitative and qualitative. Quantitative means anything that can be quantified such as a measurement, an orthoimage, a point cloud or a 3D model. Qualitative means more intangible information such as a perspective on the state of conservation of a surface, a texture, or an ambience. Second, we illustrate the processing step highlighting the challenges and defining the outcomes. Next, it is detailed what kind of data was extracted to prepare the basis for the documents to be used on the conservation project. This section is complemented with the analysis on how data was shared among the project team and how it was used. Finally, it is discussed how the nature of the data and information generated influenced the consolidation design.

Conservation planning is a complex process involving a wide range of agents such as architects, engineers, conservators and archaeologists. Their integrated inputs contribute to the definition of criteria for the conservation project and the conservation strategy. In this process, graphical documentation is a common denominator to all involved areas-of-expertise. It provides the basis for the dialog between agents coming from different fields of knowledge that often don’t speak the same technical language nor share the same codes. The way this dialog can be improved through documentation is the main motivation of our study.In this paper we analyze the requirements of digital documentation in Cultural Heritage (CH) conservation strategies, and we tackle the fundamental role of photogrammetry and terrestrial laser scanning (TLS), and integrated implementation throughout the several steps, from the fieldwork to the conservation planning for CH sites. The described process is demonstrated through the case study of ‘the conservation project of the historic walls of Lagos’, in south Portugal.After introduction and related work, the study is structured in four main sections. In the second section, we present the case study and conduct an analysis of existing data and preliminary synthesis of heritage values related to the historic walls of Lagos. Second section corresponds to an overview of the project workflow. This spans from recording and documentation, considering geometry, colour, light, materials and degradation forms; to their analysis and diagnosis, resulting in criteria and guidelines for the intervention actions. Third section emphasises on how the simultaneous use of photogrammetry and TLS in the documentation process, and its relationship with other methods and techniques, introduces a distinctive character in the conservation project. Fourth section is about the documentation process with photogrammetry and TLS. Finally, fifth section focus in the analysis and architectural project.