Heritage — Open Access Journal

In this work, a multi-disciplinary approach regarding diagnostic study processes is presented, using as an example the Catholicon of Kaisariani Monastery in Attica, Greece. Kaisariani Monastery is considered one of the most important Byzantine architectural complexes in Greece. The Catholicon of Kaisariani Monastery was built during the middle Byzantine period, and has undergone many reconstructions during the centuries. It is a semi-complex, four-columned, cross-in-square church, with a cloisonné masonry. The suggested diagnostic processes included the creation of multidisciplinary thematic maps in Computer Aided Design (CAD) environment, which incorporated: (a) data of historical and architectural documentation; (b) data of geometric documentation; and (c) data of building materials characterization and decay diagnosis. The historical and general architectural data were acquired by thorough bibliographical/archival research. Geometric documentation data were acquired by three-dimensional (3D) laser scanner for the creation of the Catholicon section drawings, whereas image based photogrammetric techniques were utilized for the creation of a 3D textured model, from which orthoimages and architectural drawings of the Catholicon façades were developed. In parallel, characterization of building materials and identification of decay patterns took place after the onsite application of the nondestructive techniques of digital microscopy, infrared thermography and ground penetrating radar. These vast array kinds of data were elaborated and integrated into the architectural drawings, developing thematic maps that record and represent the current preservation state of the monument, a concerning major construction phases, the most important conservation intervention projects, building materials and decay. Furthermore, data quantification regarding the extent of building materials and decay at each monument’s façade took place. Therefore, correlation and better understanding of the environmental impact on building materials according to façade orientation and historical data, e.g., construction phases, was accomplished. In conclusion, the presented processes are multidisciplinary tasks that require collaboration among architects, surveyor engineers and materials scientists/engineers. They are also prerequisites for the planning and application of compatible and efficient conservation/restoration interventions, for the ultimate goal of the sustainable protection of a monument. Full article

The perception of our heritage is based on sign-functions, which relate visual representations to cognitive types, allowing us to make perceptual judgements over physical objects. The recording of these types of assertions is paramount for the comprehension and analysis of our heritage. The article investigates a theoretical framework for the organization of information related to visual works on the basis of the identity and symbolic value of their single constituent elements. The framework developed is then used as a driver for the grounding of a new ontology called VIR (Visual Representation), constructed as an extension of CIDOC-CRM (CIDOC Conceptual Reference Model). VIR sustains the recording of statements about the different structural units and relationships of a visual representation, differentiating between object and interpretative act. The result, tested with data describing Byzantine and Renaissance artworks, presents solutions for describing symbols and meanings of iconographical objects, providing new clustering methods in relation to their constitutive elements, subjects or interpretations. Full article

The purpose of this contribution is to analyze the role of the Arsenal in the history of management, still underrepresented in international historiography, and link it to the literature on industrial heritage. It is this central role in the history of management that endows the Venice Arsenal with particular significance as intangible heritage. Discussing specific problems related to the research and interpretation of this intangible significance, in a context of stratification of levels of organization over time, this paper considers some implications for restoration of the Arsenal, as well as area to preserve this intangible heritage in terms of research, documentation, and presentation needs. Full article

Few and fragmentary is the information regarding the “oro di metà” (halfway gold) gilding due to the low probability of finding it in paintings as well as its short durability because of tarnishing. However, the very rare, excellent state of conservation of the gilding found in the fifteenth-century wood panel painting of the Master of St. Ivo studied in this work along with a multi-analytical approach allowed shedding light on the structure, the composition and the conservation state of this type of gilding. An Ultra-High Resolution Scanning Electron Microscope (UHR-SEM) along with Energy Dispersive X-Ray (EDX) analysis and polarised light Optical Microscopy (OM) were employed in order to image and analyse a cross-section of a sample taken from the wood panel painting. Results highlighted a divided structure of the gilding which is constituted by two separated layers of gold and silver with different thickness. This is the first time that scientific evidence on this issue is provided. Moreover, considerations on the tarnishing process of the gilding were made. Finally, complementary vibrational spectroscopic techniques such as micro-Raman and micro-ATR-FTIR were employed in order to identify the molecular composition of the “bole” (gilding preparation layer) and the ground layers. Full article

One of the most important aspects of the long-term digital-image preservation strategy is maintaining data fixity, i.e., assuring the integrity and authenticity of original data. This article aims to highlight the limitations of the approaches used to maintain the fixity of digital images in the digital preservation process and to offer perceptual hashing as a way to alleviate some of the limitations of current approaches, as well as discuss some non-technical implications of the described problems. This paper is exploratory, and while it includes a simple experiment description, it only outlines the problem and testing environment for a possible solution that could be elaborated on in further research. The most commonly used fixity maintaining techniques are immutability of data and file checksums/cryptographic hashes. On the other hand, planning for long-term preservation necessitates the need to migrate data into new future formats to maintain availability and sustainability, and the concept of the file itself should not be assumed to remain forever, which calls for other tools to ascertain the fixity of digital images. The problem goes beyond one that is exclusively technical: bitstream content is not ready for human perception, and the digital preservation strategy should include all the necessary technical steps to assure the availability of stored images to human eyes. This shifts the perspective on what should be considered the digital image in digital preservation. It is not the file, but a perceptible object, or, more specifically—instructions to create one. Therefore, it calls for additional tools to maintain fixity, such as perceptual hashing, transformation logging, and others. Full article

The sustainable preservation of monuments requires the use of performing materials which are at the same time compatible with the monument’s historical building materials to ensure structural integrity, adequate performance of the structure in earthquake stresses, and resilience of both restoration and historical materials. This is especially true for cultural heritage assets that have experienced major destruction, demanding extensive reconstruction. The Plaka Bridge in Epirus, Greece, partially collapsed after a heavy rainfall in 2015. It was a supreme example of traditional stone bridge architecture of the region and an important landmark. In the present study, a potential restoration stone from a nearby quarry was examined in terms of compatibility in relation to the dominant historical building stone of the bridge, as well as in terms of mechanical performance, through a variety of in lab techniques. In addition, criteria were set for restoration mortars, taking into account the characteristics of the historical materials, as well as the environment of the bridge. The results of the study regarding the restoration stone and mortars are presented and assessed, in order to select the most appropriate restoration materials for Plaka Bridge in its upcoming restoration, aiming to enhance the overall resilience of the structure. Full article

This paper reflects on the embrace of the Ancient world in modernity and the journey to Greece as a vehicle for their reciprocal reshaping. In the interwar period, new visual narratives emerged in Western accounts, proposing alternative contexts for Greek cultural heritage and associating regional culture with the emergence of modernism. The article investigates the mobility of modern travellers in Greece as an essential factor for the new contextualization of the country’s dominant cultural paradigm -Antiquity- as well as for the emergence of parallel narrations of the Mediterranean genius loci that examine the spatial imprint of heritage and tourism on the Greek urban, archaeological and natural environment. Western intellectuals, engineers, architects and urban planners, supported by a highly mobile network of editors, travel agencies, tourist cruises, architectural or archaeological conferences and congresses, contributed to the promotion of modern architecture and urban infrastructure in Greece. Their yet to become tourist gaze embraced the Aegean tradition, the Greek landscape and the ancient ruins as equal collocutors, initiating at the same time Greece itself into modernity. This paper traces the encounters between foreign travellers and the divergent manifestations of the country’s cultural identity in the pages of printed articles, books, travel accounts, photographic material and films. Following these documentations, the paper argues that tourism mobility gave rise to an alternative, southern modernism, whose emergence and development deviates significantly from mainstream narratives propounded by the continental historiography of modernity. Vice versa, the modern mobility networks of the South promoted the development of urban infrastructure and welfare facilities in Greece, as well as the establishment of early tourism policies, thus articulating the new national narrative of interwar Greece, based equally on classical heritage, regional culture and modern progress. The present paper is part of the research program Voyage to Greece: Mobility and modern architecture in the interwar period, where E. Athanassiou, V. Dima, V.; Karali, K. contribute as post-doctoral researchers, with P. Tournikiotis, Professor NTUA as scientific supervisor. The research is co-financed by the Greek State and the European Union. Full article

This paper describes the results obtained using an archaeogeophysical-based approach for discovering new Roman structures belonging to the ancient settlement of Forentum, currently identifiable by a well-preserved sanctuary from the third century BC. The investigated area has been affected by invasive anthropic activities that have partially damaged the Roman structures. Extensive geophysical measurements, including detailed ground-penetrating radar investigations supported by magnetometric data, have allowed for the identification of an impressive complex of structures composed of various buildings. Magnetometric and electromagnetic anomalies suggest the existence of an “urban” dimension close to theGravetta Sanctuary, totally unearthed and unknown until now, organized into regular patterns in a similar way to the most famous site in the vicinity of Bantia, or the famous Apulian archaeological sites of Ordona and Arpi. Full article

Anthropological fieldwork in rural settlements on the west coast of India has unraveled the close connection between lived experiences, spaces and objects. These “inalienable possessions”, in the words of Annette Weiner, help reconstruct the past through the supplementation of oral traditions. Following this vein, the paper attempts to mesh together the material culture and oral histories to establish the provenance for the plethora of memorials in the state of Gujarat. A series of oral narratives collected in Western India since 2014 has highlighted the role of medieval memorial stelae that commemorate the deceased heroes of war and their wives and companions. This paper creates a niche for the Gujarati oral tradition as provenance for the continued veneration of these memorials. Field observations from 2014–2016 and notes from research in Gujarat from 1985 onwards enabled the study of patterns in the oral preservation of literature. A systematic documentation of the existing stelae and associated oral traditions has informed the views in this paper. The paper speaks to all levels of interaction and the making of an identity for the memorial stones that are unique to the state of Gujarat. A case for the inclusion of such rich material in museum displays is made in connection with this case study of the memorial stelae in Gujarat. Full article

The site of Sassi in Matera originates from a troglodyte village that is believed to be one of the first human settlements in Italy. The structure reflects the progressive transformation of natural caves into closed caves for urban use, and over time has distinguished a complex urban landscape that can only be fully appreciated when observed in cross-section. During the 20th century, the demographic rise and the socio-economic decline of the area turned these dwellings into a socio-environmental disaster and the area was definitively evacuated in the 1960s. Since then, the underground settlement has been revisited and is now considered and valorized as a cultural site. Inscribed in the UNESCO list in 1993, Sassi in Matera is the current European Capital of Culture (2019). This paper presents a brief overview on the worldwide approach to historical underground artifacts within contemporary urban planning, followed by an analysis of the application of the recent classification for underground built heritage (UBH) to Sassi. The different levels of reuse that have been carried out in Matera during the last decades are examined with a particular focus on the difficulties in facing gentrification, and examples of possible remedies provided by “ethical conservation for architecture” that preserves the communication of historical functions are discussed. Full article

Underwater cultural heritage (UCH) constitutes an invaluable asset, which is lately being challenged by the blue growth trend that cannot be easily reconciled with the goal of UCH preservation and promotion. Maritime spatial planning (MSP)—under a place-based approach—creates better chances for UCH to receive more attention in the future compared to other resources, since it is considered to be the key procedure for tackling growing competition among sea users (user-user conflicts) and for mitigating the pressure these users put on the marine environment (natural and cultural). In Greece, a country with great insularity, extensive marine space, and a long and glorious past, UCH resources are in abundance. According to the official Ministry of Culture data-base, there are 88 designated UCH sites throughout the national waters, the majority of which are found very close to the shore. They usually concern ancient cities and built monuments that were eventually submerged (due to earthquakes, geological processes, etc.), so they usually have a mixed nature—terrestrial and marine. These sites, however, constitute a very small part of what is actually lying on the Greek seabed. Estimations for the future identify a rise in accidental discoveries of UCH, due to the blue growth trend and an increase in access to and work in the sea. In this event, much controversy is expected, concerning the appropriate type of management for UCH. The role of MSP in this decision-making process will be decisive, being about “when” and “where” human activities take place at sea, to ensure these are as efficient and sustainable as possible. Full article

ORION is a digital art history research-oriented project focused on the study of art collections and collectors in Portugal, supported on a relational database management system. Besides the obvious advantage of organizing and systematizing an enormous amount of information, promoting its analysis, this database was specifically designed to highlight the relationships between data. Its relational capacity is not only one of the most relevant features of ORION, but a differentiating quality, one step forward in comparison to other international databases and studies that use digital methodologies. This article discusses the methods and the advantages of using ORION in research related to the history of collecting, art markets and provenance of art objects in Portugal, where it is the very first time that an approach such as this is intended, looking for a systematization of data that paves the way to the emergence of new research questions. Furthermore, and because ORION aims to share the data and knowledge with other projects, institutions and researchers, the database uses different international standards, such as data structure (CIDOC-OIC and Getty-CDWA), controlled vocabulary (Iconclass, Art and Architecture Thesaurus (AAT), Thesaurus of Geographic Names (TGN), and Union List of Artist Names (ULAN)) and communication and exchange of information (CIDOC-CRM). Full article

The will to preserve and enhance cultural heritage imposes reflections on databases as containers of information for the accessibility of dispersed heritage. The aim of the research is to validate methodological approaches in order to create 3D models and information systems. These tools improve accessibility to the artifact, according to different interconnection channels, in order to overcome the physical limit imposed by location. Tangible and intangible heritage take the form of a metadata network throughout a critical analysis and elaboration of data. These files create a complex database containing 3D models rich in information that describe cultural systems. The digital survey is the starting point for the development of languages, signs and symbols. It transfers complex objects into virtual systems, developing a multidimensional dialogue capable of integrating actions and meanings. The interactivity of complex databases facilitates the accessibility and disclosure of data to a wide audience. It requires the establishment of representation systems based on the development of virtual environments. Full article

Over the last years, many projects and institutions have worked on transforming object documentation from several existing cataloguing systems into a CIDOC Conceptual Reference Model (CIDOC CRM) compliant graph representation, as expressed in RDF. There were also various attempts to provide a generally valid path for the transfer of data from Lightweight Information Describing Objects (LIDO), CIDOC’s recommended XML Schema for metadata harvesting, into representations that are suitable for the Semantic Web. They all face the challenge that a detailed mapping, which fully exploits the CRM’s expressiveness and requires semantic assumptions that may not always turn out to be valid. Broad mappings, on the other hand, fail to leverage the potential of Semantic Web technologies. In this paper, we propose a method for using LIDO combined with an associated terminology as a means of evolving existing object documentation into CRM-based RDF representations. By clearly distinguishing between controlled vocabulary and ontology, it is possible to transform object data relatively easily into a minimized, though efficient structure using the CIDOC CRM ontology. This structure will open up the whole world of Semantic Web technologies to be used for further semantic refinement and data quality analysis through exploiting the underlying controlled vocabularies Full article

The Temple of Apollo Pythios, built in the Hellenistic era (3rd–1st century BC), is located in the ancient Acropolis of Rhodes. It was excavated during the Italian occupation and reconstructed by the Italians in the period 1937–8. The method of the “scenographic” restoration was the “mixed structure” technique using a core of reinforced concrete in combination with new biocalcarenite stones and the integration of very few ancient architectural members. Its proximity to the sea and the corresponding salt decay phenomena, aggravated by the erroneous reconstruction methodology and materials, have further deteriorated its state of preservation. Today, the four columns, epistyle and entablature of the Italian interventions demand immediate restoration actions to ensure the monument’s sustainability. This can only be achieved through a combined study of the performance of potential restoration materials and assessment of their compatibility with the historical materials. In the present study, the characteristics of the Temple’s historical porous stones are presented along with the characteristics of five quarry stones, aiming to evaluate which quarry stone is the most appropriate for use in the upcoming restoration. Restoration mortars are designed and evaluated in respect to both the historical materials and the quarry stones, aiming to select the optimum restoration mortar, which can achieve the required level of performance and compatibility and ensure sustainability of the structure as a whole. Full article

Digital objects and documentation of intangible cultural heritage pose new challenges for most museums, which have a long history in preserving tangible objects. Art museums, however, have been working with digital objects for some decades, as they have been collecting media art. Yet, performance art as an ephemeral art form has been a challenge for art museums’ collection work. This article presents a method for archiving digital and audiovisual performance documentation. D-ark (digital performance art archive) is based on a joint effort by the artist community T.E.H.D.A.S., which has created the archive, and Pori Art Museum, which is committed to preserving the archive for the future. The aim is to produce sufficient standardized metadata to support this objective. This article addresses the problems of documenting an ephemeral art form and copyright issues pertaining to both the artist and the videographer. The concept of D-ark includes a modular metadata schema that makes a distinction between descriptive, administrative, and technical metadata. The model is designed to be flexible—new modules of objects or technical metadata can be added in the future, if necessary. D-ark metadata schema deploys the FRBRoo, Premis, VideoMD, and AudioMD standards. Administrative and technical metadata modules abide by Finnish digital preservation specifications. Full article

Most inorganic pigments generally consist of the colouring agents such as hematite (red) or glauconite (green) together with white pigments, including alumosilicates and calcium compounds. This usually leads to a wide colour range dependent on the exact percentage of the colouring agent in the solid mixture. Some inorganic pigments have been in use for thousands of years due to their easy availability and desirable attributes: ochres have been in use since prehistoric times to produce cave and rock paintings, and are still used to this day; terra verde (green earth) first made its appearance in decorations and frescos in the first century B.C. Whether these pigments are used in frescos, cave ornaments or paintings, shortcomings in their particular hue, transparency or fading character very often inspire research towards a better understanding of these physical characteristics. We present a study in which crystal engineering was applied in an attempt to tackle such problems. The solubility of Venetian red ochre and its solid state behaviour at higher temperatures were investigated and compared with similar studies on terra verde. Hot stage microscopy showed that, although the pigment retained its red colour upon heating, some crystallites lost transparency, indicating a phase change. The actual colouring agents hematite and goethite in Venetian red ochre are insoluble in most solvents and solvent mixtures. However, the solvent was found to have a significant effect on the undissolved pigment and other components. The pigment examined in this study was a mixture of microcrystalline powders with smaller quantities of larger crystallites thought to be gypsum. Multi-elemental analysis by X-ray fluorescence spectroscopy showed the most abundant elements to be sulphur, calcium, iron, magnesium, silicon and aluminium. Fourier-Transform Infrared (FTIR) spectroscopy indicated the presence of metal oxides, metal carbonates and alumosilicates. Powder X-ray diffraction experiments helped to identify and quantify the proportions of hematite and goethite in four different pigments. Full article

Small islands in the Mediterranean Sea, although endowed with exquisite land and maritime natural and cultural resources, are in most cases lagging behind areas, mainly due to insularity. Through their long history, many of them are strongly interwoven to events of European or even global significance, e.g., World War (WW) I and II. Such events have left in their “bodies” important remains, largely conditioning their socio-economic trajectory. Preservation and sustainable management of this Cultural Heritage (CH) is, in this work, perceived as a two-sided coin, serving endurance of European identity, memory, and CH for future generations on the one side; and leveraging future cultural tourism trails of these disadvantaged areas on the other. The goal of this article is to ‘unbury’ land and maritime, tangible and intangible, cultural remains and use them to unveil heritage-led development paths of small Mediterranean islands. This is demonstrated through a specific case study, a distinguishable insular territory and WW II battlefield scenery, Leros Island, Greece; and is accomplished by a participatory spatial planning framework, embedding scenario planning, spatial data management, and e-participation technologies (Web-GIS, social networks) for community engagement. The latter is valued for assessing options available for an integrated, sustainable, and resilient exploitation of land and maritime CH; and raising awareness of local population as to the role of CH as enabler for the transition from past failures to more promising, culturally-driven, and locally-adjusted future development trails. Full article

Heritage buildings are important in demonstrating the cultural identities of cities and, consequently, communities throughout the world. In the contemporary era, adaptive reuse has been considered as a strategy for protecting these buildings for both present and future generations. At present, the 19th and 20th century conservation and restoration theories are the backbone of the contemporary adaptation movement by introducing different forms of adaptive reuse over time. These theories revealed how the prioritization system for protecting heritage buildings has changed from a value base to technological needs and user demands. These theories have become theoretical guidelines and policies under modern development. However, these theories are less considered in the contemporary practice of adaptive reuse, and thus remain as theoretical guidelines and policies that are still being developed periodically in the national and international levels. The main aim of this study is to review and critically analyze principal 19th and 20th century theories of conservation, restoration, and adaptive reuse of heritage buildings in order to provide a holistic view of their application, aspects of which may be incorporated in future research, practice, and discussion on the subject. For this paper, these key theories are critically reviewed, analyzed, and discussed, contributing to the study of contemporary practice of adaptive reuse. A summary of the analysis of all key theories is presented. The analysis of the theories presents the evolution of different approaches to adaptive reuse of heritage buildings over time and shows the role of theories in the establishment of international conservation policies. The analysis further reveals the existing gap between theory and practice in contemporary adaptive reuse practice. Full article