China's Burra Charter: the formation and implementation of the China principles

In 2000, the China Principles were promulgated by the China ICOMOS as professional guidelines for the conservation of historic sites. In writing the China Principles, China ICOMOS worked in collaboration with heritage experts from the USA and Australia and adopted ideas from Western conservation codes, particularly Australia's Burra Charter. While acknowledging the influence of international trends on the heritage profession in China, the paper identifies the Chinese characteristics of the China Principles by comparing them with the Burra Charter, and raises issues about the application of the China Principles to conservation practice.

Examining the Suojia Ecomuseum and the Nandan Ecomuseum in China

China hosts some 55 ethnic minority groups, which together account for 8.41% of the Chinese population. These populations reside in predominantly Ethnic Minority Villages presenting great value and culture of their heritage, with living landscape, festivals, architecture and costumes, but the actual living conditions are very poor. Since the 1990s, China has adopted French concept 'ecomuseum', for the conservation of some ethnic villages to relieve the conflict between poverty and heritage conservation. ln short, this concept involves the creation of open-air museums keeping buildings and people in their original sites, with local communities serving as curators managing their own sites, which necessitates democracy in the conservation and interpretation processes. The concept seems ideal for the Chinese government, with its bilateral objectives of heritage conservation and poverty alleviation, without necessitating the relocation of any or buildings. However, does this concept really work? It remains unanswered and the subject of little academic research. In order to examine how successfully these ecomuseums are being managed, two projects has been selected for case studies - the Suojia Ecomuseum and the Nandan Ecomuseum. In-depth field studies have been conducted at the two ecomuseums, involving the methodologies of site observation, documentation and semi-structured interviews. This paper reviews the ecomuseum development in China, and then provides detailed critiques and overviews of the Suojia Ecomuseum and the Nandan Ecomuseum in terms of their backgrounds, management structures, programs and activities as well as pertinent issues. Based upon these descriptions, it is·identified that the two cases have different management structures and focuses: 1) the Suojia Ecomuseum has been under the management of government authorities whilst the Nandan Ecomuseum has been operated by local villagers, and 2) the focus of the Suojia Ecomuseum has been improving living conditions for the residents, while in Nandan Ecomuseum cultural inheritance has been operated as a core program. However, there is a lack of financial support in both cases. All these issues lead to a discussion that the Nandan Ecomuseum has made greater achievement in terms of being community-based. The conclusions are hence drawn as to the suggestions to Chinese ecomuseums--the sustainability and success requires local villagers as curators as well as external financial assistance. In addition, another and more urgent need is to pass the ethnic cultures and their values to the next generation.

Retake Melbourne : mobile application for re-photography and comparative imaging research

A project of interpretive and comparative re-photography, making use of the collection of Mark Strizic's images and the documents related to his career, held by the State Library, as a basis. Strizic died in 2012. It is now 50 years since his work began to illustrate the period of the 1960s when architecture of the Gold Rush era coexisted side-by-side with, and was being replaced by, curtain-glass high-rise office buildings. It is the position of the researchers that not sufficient attention has been given to Mark Strizic’s reaction to what he saw as a plague of ugliness pervading Australian city-scapes, developing a distinctive aesthetic that in turn made his work useful to commentators like Robin Boyd and David Saunders. Strizic operated from a unique perspective as a migrant with an architectural heritage from his father Zdenko, prominent architecture professor in Croatia, and visiting professor of architecture at Melbourne University in the 1960s. Precise re-photography alongside creative work will enable a comparison of Melbourne now with fifty years ago. The public will be able to participate in and contribute to the project via a crowd-funded custom-made app. Half a century has passed since Strizic made his photographs of Melbourne. In so many cases buildings have disappeared or altered, streetscapes have changed and the appearance of Melburnians have changed as have their habits of using the city. A selection of Strizic’s photographs of Melbourne locations can be rephotographed by the public using the methods devised by Mark Klett, assisted by the app software. This will provide a core of documentary imagery of benefit in framing and completing the rest of this project and to future research through comparisons over the time span. The app enables the location on a map of the site and orientation of photographs taken by Strizic. Photographs are downloaded onto users’ devices from the online SLV Strizic picture catalogue. They appear in the app as transparent templates so that users can line up their own re-photograph with accuracy. They will be able to upload their resultant images to a server and they will be available to the Library as an archive enabling direct comparison with the Strizic holdings. It is anticipated that involvement and participation of the public will elevate the profile of the project and publicise the SLV collections and encourage their increased usage and popularity.

Consultation unlocks interdisciplinary resources: A community museum evolving in the Kelabit Highlands, Malaysian Borneo

This article discusses the role of community consultation in the process of developing a community museum in the Kelabit Highlands in Sarawak. It reflects on the relationships between heritage conservation, cultural tourism and competing community aspirations.   

Towards a theory of landscape iconoclasm

The destruction of Indigenous rock art sites in the Pilbara district in Western Australia has become a natural sight within the mining landscape of the area. Whilst much of the destruction is explained as acts of vandalism and as a result of the industrial activities that are propelling the Australian economy, I claim that a new theory of iconoclasm is needed to explain fully this disastrous example of heritage conservation. Henceforth, in order to explain the destruction of the Murujuga/Burrup Peninsula petroglyphs, the largest archaeological site in the world, this paper develops the theory of landscape iconoclasm. This theory states that the destruction of Indigenous landscapes can be compared to the destruction of religious images, by analysing the inherent symbolic functions of iconoclasm, together with those of heritage, the better to elucidate the state of affairs in the Murujuga/Burrup Peninsula. Furthermore, by drawing from Aboriginal mythology and art-historical and anthropological theories, the theory of landscape iconoclasm is able to explain the destruction of archaeological sites within a framework that falls outside prevalent discourses of heritage.

Percepção ambiental do patrimônio cultural: estudo de caso na Cidade Alta e Ribeira em Natal-RN

Contemporary studies have shown that the evolution of the heritage concepts is accompanied by an affirmation of the importance of social participation in recognizing heritage values and in managing cultural assets. We used the Brazilian context to emphasize the challenges for democratizing this process. This problematic is discussed based on the cases of Cidade Altaand Ribeira, neighborhoods that date from the formation of Natal-RNand have cultural assets recognized by levels of government. The study builds elements to answer the research question: what meanings and representations does the culturalheritage in the case study have for its users? The research method analyzes the representations and the meanings of the neighborhoods, firstly is based on historiographical studies, memories records of the city and on the process of heritage management. Secondly, it isbased on the field research, it is structured in environmental perception studies (areas of Environmental Psychology, Architecture and Urbanism) and has been applied with users with different bonds with the studied environment (residents, workers and visitors). The data were obtained with the multi-method which included direct observation, questionnaire survey and mentalmaps (that replicate Kevin Lynch). The analysis of result verified the research hypothesis, emphasizing aspects of the relationship between users and cultural heritage relevant to strengthening collective memory, local identity, contributing to heritage management. Among the results, the socio-environmental image obtained which emphasized a "cultural axis" linkingboth studied neighborhoods and confirms the influences of elements rein the memories records of the city and in the area s management. Identified aspects to strengthen the relationship between the users and cultural assets, such as the presence of placeswith affective ties to certain groups, as well as the need to fight off negative images (of degradation and insecurity) associated to the site and also expand the participation of the population, including residents, in policies and cultural activities. After all, recognition of value and the involvement of societycultural assets have the potential of contribute to integrate city development with heritage conservation

Cavas históricas de ouro do Jaraguá: o que resta para se preservar?

The Historical Jaraguá Gold Caves are vestiges of excavations in weathered rock, dating back to the Brazilian colonial times, situated NW of Jaraguá peak, in the São Paulo municipality (SP). The areas were investigated to support historical preservation innitiatives. The excavations have lateral steep slopes and a narrow fat bottom zone, occupied by dense vegetation. The trace of the excavations is sinuous, trending N40-50W, in accordance to a transition zone of Neoproterozoic rocks: metapelites and metapsamites by the SW side and calc-silicate rocks and amphybolites at NE. The structural control results from three successive deformation phases. Urban expansion and road construction, during the last 30 years, have strongly impacted the areas: (I) Base of Quebra-Pé hill; (II) Jardim Britânia; (III) Morro Doce; (IV) Nova Anhangüera Park. A 5 th site was disfgured by earthworks. The Jardim Britânia area is partly discharacterized by earthflls; this however does not impede further protection actions. This framework allows to recommend authorities: (1) to permit immediate preservation of these areas; (2) to develop programs to build an integrated site for scientifc diffusion or an educational center for exhibition of rocks, ores and mineral samples; (3) to support the interest of some owners to preserve the area called Morro Doce, (4) to put forward a few proposals for educational use of the excavations, by production of feld guides on the historic sites. The alternatives will help keeping alive the memory of mining in the São Paulo State.

Zoneamento do parque ecológico de ourinhos SP

The aim of this study was to carry out a zoning in the municipal ecological park of Ourinhos, SP, located southwest of São Paulo State, aiming to subsidize the planning and management of this area. With this purpose it was made an inventory of the landscape resources of this park with hypsometry, declivity, use of soil and zoning mappings. From this zoning, we analyzed the possibilities of implementing purposes of use, with the objective of preserving this area, minimizing the negative environmental impacts. Thus, this research was of extreme importance, since it allowed to identify and rank, in the territory, areas or sectors that are priority to the development of activities, as well as contribute to the conservation of natural and socio-cultural heritage.

Preservação do patrimônio escolar no Brasil: notas para um debate

This article comprises of a reflection on the challenges of the school heritage conservation in Brazil. First, it analyses the place for school heritage thin in a much more ample field of cultural heritage. Then, it points out problematic questions assumed in the debate on heritage in the education area and examines the consequent sense of the school converted in “place of memory”. The text defends the indispensability of the insertion of the school heritage in the public, political and specialized debate in the field of conservation as a condition for the development of education heritage in the country.

"Pues doy Fe de que son tenidos como tales" : Prácticas y discursos legitimantes en el intento de conformación de una posible nobleza rioplatense

A mediados del siglo XVIII los grandes comerciantes de distintos espacios hispanoamericanos, acumulan suficientes caudales que les permiten comprar títulos de nobleza, distinciones o formar mayorazgos que relumbren sus nombres y perpetúen sus bienes adquiridos. Este proceso es mayormente evidente en los espacios mexicanos y peruanos; pero no se conocen casos concretos para el espacio rioplatense. Como planteó José Torre Revello, esto no implica que los comerciantes rioplatenses no intentasen ennoblecerse. El presente estudio de caso detalla como Don Vicente de Azcuénaga intenta fundar un mayorazgo en la ciudad de Buenos Aires a favor de su primogénito Miguel. A través de este estudio basado en las "probanzas" se puede observar como la familia Azcuénaga pretende resaltar su nombre frente al resto de sus contemporáneos, pero las relaciones entre padre e hijo nos conducen a la vez a replantearnos interrogantes referentes a las tradiciones de acumulación y conservación de patrimonios

"Pues doy Fe de que son tenidos como tales" : Prácticas y discursos legitimantes en el intento de conformación de una posible nobleza rioplatense

A mediados del siglo XVIII los grandes comerciantes de distintos espacios hispanoamericanos, acumulan suficientes caudales que les permiten comprar títulos de nobleza, distinciones o formar mayorazgos que relumbren sus nombres y perpetúen sus bienes adquiridos. Este proceso es mayormente evidente en los espacios mexicanos y peruanos; pero no se conocen casos concretos para el espacio rioplatense. Como planteó José Torre Revello, esto no implica que los comerciantes rioplatenses no intentasen ennoblecerse. El presente estudio de caso detalla como Don Vicente de Azcuénaga intenta fundar un mayorazgo en la ciudad de Buenos Aires a favor de su primogénito Miguel. A través de este estudio basado en las "probanzas" se puede observar como la familia Azcuénaga pretende resaltar su nombre frente al resto de sus contemporáneos, pero las relaciones entre padre e hijo nos conducen a la vez a replantearnos interrogantes referentes a las tradiciones de acumulación y conservación de patrimonios

"Pues doy Fe de que son tenidos como tales" : Prácticas y discursos legitimantes en el intento de conformación de una posible nobleza rioplatense

A mediados del siglo XVIII los grandes comerciantes de distintos espacios hispanoamericanos, acumulan suficientes caudales que les permiten comprar títulos de nobleza, distinciones o formar mayorazgos que relumbren sus nombres y perpetúen sus bienes adquiridos. Este proceso es mayormente evidente en los espacios mexicanos y peruanos; pero no se conocen casos concretos para el espacio rioplatense. Como planteó José Torre Revello, esto no implica que los comerciantes rioplatenses no intentasen ennoblecerse. El presente estudio de caso detalla como Don Vicente de Azcuénaga intenta fundar un mayorazgo en la ciudad de Buenos Aires a favor de su primogénito Miguel. A través de este estudio basado en las "probanzas" se puede observar como la familia Azcuénaga pretende resaltar su nombre frente al resto de sus contemporáneos, pero las relaciones entre padre e hijo nos conducen a la vez a replantearnos interrogantes referentes a las tradiciones de acumulación y conservación de patrimonios

Aplicación de la celulosa bacteriana a la restauración del patrimonio bibliográfico y documental en papel

La preservación del patrimonio bibliográfico y documental en papel es uno de los mayores retos a los que se enfrentan bibliotecas y archivos de todo el mundo. La búsqueda de soluciones al problema del papel degradado ha sido abordada históricamente desde dos líneas de trabajo predominantes: la conservación de estos documentos mediante la neutralización de los ácidos presentes en ellos con agentes alcalinos, y su restauración mediante el método de laminación fundamentalmente con papel de origen vegetal. Sin embargo, no se ha explorado con éxito la posibilidad de reforzar la celulosa dañada, y el problema sigue sin encontrar una solución satisfactoria. Hasta el día de hoy, el desarrollo de tratamientos basados en biotecnología en la conservación del patrimonio documental ha sido muy escaso, aunque la capacidad de ciertas bacterias de producir celulosa lleva a plantear su uso en el campo de la conservación y restauración del papel. La celulosa bacteriana (CB) es químicamente idéntica a la celulosa vegetal, pero su organización macroscópica es diferente. Sus propiedades únicas (alto grado de cristalinidad, durabilidad, resistencia y biocompatibilidad) han hecho de este material un excelente recurso en diferentes campos. En el desarrollo de esta tesis se ha estudiado el uso de la celulosa bacteriana, de alta calidad, generada por Gluconacetobacter sucrofermentans CECT 7291, para restaurar documentos deteriorados y consolidar los que puedan estar en peligro de degradación, evitando así su destrucción y proporcionando al papel que se restaura unas buenas propiedades mecánicas, ópticas y estructurales. Se desarrollan asimismo protocolos de trabajo que permitan la aplicación de dicha celulosa. En primer lugar se seleccionó el medio de cultivo que proporcionó una celulosa adecuada para su uso en restauración. Para ello se evaluó el efecto que tienen sobre la celulosa generada las fuentes de carbono y nitrógeno del medio de cultivo, manteniendo como parámetros fijos la temperatura y el pH inicial del medio, y efectuando los ensayos en condiciones estáticas. Se evaluó, también, el efecto que tiene en la CB la adición de un 1% de etanol al medio de cultivo. Las capas de celulosa se recolectaron a cuatro tiempos distintos, caracterizando en cada uno de ellos el medio de cultivo (pH y consumo de fuente de carbono), y las capas de CB (pH, peso seco y propiedades ópticas y mecánicas). La mejor combinación de fuentes de carbono y nitrógeno resultó ser fructosa más extracto de levadura y extracto de maíz, con o sin etanol, que proporcionaban una buena relación entre la producción de celulosa y el consumo de fuente de carbono, y que generaban una capa de celulosa resistente y homogénea. La adición de etanol al medio de cultivo, si bien aumentaba la productividad, causaba un descenso apreciable de pH. Las capas de CB obtenidas con los medios de cultivo optimizados se caracterizaron en términos de sus índices de desgarro y estallido, propiedades ópticas, microscopía electrónica de barrido (SEM), difracción de rayos-X, espectroscopía infrarroja con transformada de Fourier (FTIR), grado de polimerización, ángulos de contacto estáticos y dinámicos, y porosimetría de intrusión de mercurio. Por otro lado hay que tener en cuenta que el material restaurado debe ser estable con el tiempo. Por ello esta misma caracterización se efectuó tras someter a las capas de CB a un proceso de envejecimiento acelerado. Los resultados mostraron que la CB resultante tiene un elevado índice de cristalinidad, baja porosidad interna, buenas propiedades mecánicas, y alta estabilidad en el tiempo. Para desarrollar los protocolos de trabajo que permitan la restauración con esta celulosa optimizada, se comienzó con un proceso de selección de los papeles que van a ser restaurados. Se eligieron tres tipos de papeles modelo, hechos con pasta mecánica, química y filtro (antes y después de ser sometidos a un proceso de envejecimiento acelerado), y tres libros viejos adquiridos en el mercado de segunda mano. Estos ejemplares a restaurar se caracterizaron también en términos de sus propiedades mecánicas y fisicoquímicas. El primer protocolo de restauración con CB que se evaluó fue el denominado laminación. Consiste en aplicar un material de refuerzo al documento mediante el uso de un adhesivo. Se seleccionó para ello la CB producida en el medio de cultivo optimizado con un 1% de etanol. Se aplicó un método de purificación alcalino (1 hora a 90 °C en NaOH al 1%) y como adhesivo se seleccionó almidón de trigo. El proceso de laminación se efectuó también con papel japonés (PJ), un material habitualmente utilizado en conservación, para comparar ambos materiales. Se concluyó que no hay diferencias significativas en las características estudiadas entre los dos tipos de materiales de refuerzo. Se caracterizó el material reforzado y, también, después de sufrir un proceso de envejecimiento acelerado. Los papeles laminados con CB mostraban diferencias más marcadas en las propiedades ópticas que los restaurados con PJ, con respecto a los originales. Sin embargo, el texto era más legible cuando el material de restauración era la CB. La mojabilidad disminuía con ambos tipos de refuerzo, aunque en los papeles laminados con CB de manera más marcada e independiente del material a restaurar. Esto se debe a la estructura cerrada de la CB, que también conduce a una disminución en la permeabilidad al aire. Este estudio sugiere que la CB mejora la calidad del papel deteriorado, sin alterar la información que contiene, y que esta mejora se mantiene a lo largo del tiempo. Por tanto, la CB puede ser utilizada como material de refuerzo para laminar, pudiendo ser más adecuada que el PJ para ciertos tipos de papeles. El otro método de restauración que se estudió fue la generación in situ de la CB sobre el papel a restaurar. Para ello se seleccionó el medio de cultivo sin etanol, ya que el descenso de pH que causaba su presencia podría dañar el documento a restaurar. El método de purificación elegido fue un tratamiento térmico (24 horas a 65 °C), menos agresivo para el material a restaurar que el tratamiento alcalino. Se seleccionó la aplicación del medio de cultivo con la bacteria mediante pincel sobre el material a restaurar. Una vez caracterizado el material restaurado, y éste mismo tras sufrir un proceso de envejecimiento acelerado, se concluyó que no hay modificación apreciable en ninguna característica, salvo en la permeabilidad al aire, que disminuye de manera muy evidente con la generación de CB, dando lugar a un material prácticamente impermeable al aire. En general se puede concluir que ha quedado demostrada la capacidad que tiene la celulosa generada por la bacteria Gluconacetobacter sucrofermentans CECT 7291 para ser utilizada como material de refuerzo en la restauración del patrimonio documental en papel. Asimismo se han desarrollado dos métodos de aplicación, uno ex situ y otro in situ, para efectuar esta tarea de restauración. ABSTRACT The preservation of bibliographic and documentary heritage is one of the biggest challenges that libraries and archives around the world have to face. The search for solutions to the problem of degraded paper has historically been focused from two predominants lines of work: the conservation of these documents by the neutralization of acids in them with alkaline agents, and their restoration by lining them with, basically, cellulose from vegetal sources. However, the possibility of strengthening the damaged cellulose has not been successfully explored, and the problem still persists. Until today, the development of biotechnology-based treatments in documentary heritage conservation has been scarce, although the ability of certain bacteria to produce cellulose takes to propose its use in the field of conservation and restoration of paper. The bacterial cellulose (BC) is chemically identical to the plant cellulose, but its macroscopic organization is different. Its unique properties (high degree of crystallinity, durability, strength and biocompatibility), makes it an excellent resource in different fields. The use of high-quality BC generated by Gluconacetobacter sucrofermentans CECT 7291 to restore damaged documents and to consolidate those that may be at risk of degradation, has been studied in this thesis, trying to prevent the document destruction, and to get reinforced papers with good mechanical, optical and structural properties. Protocols that allow the implementation of the BC as a reinforcing material were also developed. First of all, in order to select the culture medium that provides a cellulose suitable for its use in restoration, it has been evaluated the effect that the carbon and nitrogen sources from the culture medium have on the generated BC, keeping the temperature and the initial pH of the medium as fixed parameters, and performing the culture without shaking. The effect of the addition of 1% ethanol to the culture medium on BC properties was also evaluated. The cellulose layers were collected at four different times, characterizing in all of them the culture medium (pH and carbon source consumption), and the BC sheets (pH, dry weight and optical and mechanical properties). The best combination of carbon and nitrogen sources proved to be fructose plus yeast extract and corn steep liquor, with or without ethanol, which provided a good balance between the cellulose production and the consumption of carbon source, and generating BC sheets homogeneous and resistant. The addition of ethanol to the culture medium increased productivity but caused a noticeable decrement in pH. The BC layers generated with these optimized culture media, have been characterized in terms of tear and burst index, optical properties, scanning electron microscopy (SEM), X-ray diffraction, infrared Fourier transform spectroscopy (FTIR), polymerization degree, static and dynamic contact angles, and mercury intrusion porosimetry. Moreover it must be kept in mind that the restored materials should be stable over time. Therefore, the same characterization was performed after subjecting the layers of BC to an accelerated aging process. The results showed that the BC sheets obtained have a high crystallinity index, low internal porosity, good mechanical properties, and high stability over time. To develop working protocols to use this optimized BC in paper restoration, the first step was to select the samples to restore. Three types of model papers, made from mechanical pulp, chemical pulp and filter paper (before and after an accelerated aging process), and three old books purchased in the second hand market, were chosen. These specimens to be restored were also characterized in terms of its mechanical and physicochemical properties. The first protocol of restoration with BC to be evaluated is called linning. It consists on applying a reinforcing material to the document using an adhesive. The BC produced in the optimized culture medium with 1% ethanol was selected. An alkali purification method (1 hour at 90 °C in 1% NaOH) was applied, and wheat starch was selected as adhesive. The linning process was also carried out with Japanese paper (JP), a material commonly used in conservation, in order to compare both materials. It was concluded that there are no significant differences in the characteristics studied of the two types of reinforcing materials. The reinforced materials were characterized before and after undergoing to an accelerated aging. Papers lined with BC showed more marked differences in the optical properties that papers restored with JP. However, the text was more readable when BC was the reinforcing material. Wettability decreased with both types of reinforcement, although in the papers linned with BC it happened more marked and independently of the sample to restore. This is due to the closed structure of BC, which also leads to a decrement in air permeance. This study suggests that BC improves the deteriorated paper quality, without altering the information on it, and that this improvement is maintained over time. Therefore, the BC may be used as reinforcing material for linning, being more suitable than the JP to restore certain types of papers. The other restoration method to be evaluated was the in situ generation of BC over the paper to restore. For this purpose the culture medium without ethanol was selected, as the pH decrement caused by his presence would damage the document to restore. As purification method a heat treatment (24 hours at 65 °C) was chosen, less aggressive to the material to restore than the alkaline treatment. It was decided to apply the culture medium with the bacteria onto the material to restore with a brush. The reinforced material was characterized before and after an accelerated aging process. It was concluded that there was no substantial change in any characteristic, except for air permeance, which decreases very sharply after the generation of BC, getting a substantially air impermeable material. In general, it can be concluded that the ability of BC produced by Gluconacetobacter sucrofermentans CECT 7291 for its use as a reinforcing material in the restoration of paper documentary heritage, has been demonstrated. Also, two restoration methods, one ex situ and another in situ have been developed.

Restoration of religious temples: intervention in the church “Nuestra Señora de Belén” in Crevillente (Alicante)

Heritage conservation has raised historical problems usually centered in defects resulting from water leaks. Thus, any intervention is presented as a difficult task, both due to building techniques to be used and the lack of economic resources in many cases. In relation to the temples existing in Alicante (Spain), water drainage is solved with pitched roofs on slope formation (in vaulted naves) or directly supported on the vaulted elements (in the domes). Since those construction systems are composed by brick and plaster, the presence of moisture is problematic, and represents a risk of losing the strength capacity and therefore the stability of the dome. An example of this problem is the dome of the church “Nuestra Señora de Belén” in Crevillente, built with solid bricks, it has the highest diameter of the province (18th century). This historic building has been restored on several occasions in the recent years due to moisture, cracks or fissures. The study of these works give an idea of the difficulties of maintenance, conservation and proper restoration of such kind of buildings as unique and valued constructions in our heritage.