Gold leather: Symposium in Maastricht

Building design

Gold leather was the focus of an international symposium in spring 2016. Experts met at the Stichting Restauratie Atelier Limburg (SRAL) to discuss the technical art history of the material, material dynamics, challenges in conservation and diagnostics. The symposium was supported by the Netherlands Organization for Scientific Research (NWO) on the initiative of the Netherlands Institute for Conservation, Art and […]

Gold leather was the focus of an international symposium in spring 2016. Experts met at the Stichting Restauratie Atelier Limburg (SRAL) to discuss the technical art history of the material, material dynamics, conservation challenges and diagnostics. The symposium was supported by the Netherlands Organization for Scientific Research (NWO) on the initiative of the Netherlands Institute for Conservation, Art and Science (NICAS).

The 17th and 18th centuries are considered the “Golden Age” of gold leather in the north and south of the Netherlands. Although this material was once as famous as Delft pottery, unfortunately much of it has been lost. The reasons for this are renovations, material degradation and a lack of knowledge about conservation methods. The current generation of technical art historians, conservators and scientists are working together to preserve these objects and their cultural significance for future generations.

At a Goldleder symposium in spring 2016, conservators and scientists came together in Maastricht to discuss the future of this endangered cultural asset and its future conservation and restoration methods.

The discussion on the subject of “Technical Art History” came to the conclusion that analyses must be carried out using the most modern methods in a wider European context on objects left in their original state: in their original location, well documented and with few conservation interventions. The data thus obtained will be compared with archival studies of the most important manufacturing centers (Mechelen, Venice, Cordoba) by examining inventory lists, transport of craft objects and the connection between workshops. A database for research data and source research is urgently needed.

In the area of ‘material dynamics’, it was found to be a concern that the ageing process of gold leather is neither well studied nor understood. In some cases, leather panels age at very different rates in the same room.

The challenges

Cleaning and dealing with the effects of previous conservation efforts were key areas of focus in the topic of conservation challenges. There is extensive literature on cleaning in general, but these methods may not be suitable for gold leather. The second major difficulty is dealing with previous treatments. Feeding, the application of new varnish or treatments with oil or wax can permanently alter the objects and cause gold leather to darken. Last but not least, the decreasing flexibility of old leather remains a problem for which no satisfactory solution has yet been found.

The symposium also dealt with the topic of “diagnostics”. The latest technical equipment makes it possible to examine some art historical and conservation issues more closely. For example, peptide mass fingerprints (PMF) can be used to determine which animal was used for leather production (cow, goat, sheep). The experts found it particularly important to identify the materials, adhesives, protective layers and metal leaf compounds used in order to gain insights into the origin and trade of materials. More detailed information on the stratigraphy of gold leather can now be obtained thanks to optical coherence tomography (OCT) – a technique originally developed for medical applications – and spectral distributions can be mapped using hyperspectral imaging.

The future of gold leather

Many gold leather objects are in a precarious condition or have already been lost. Due to the small expert community for gold leather, it is all the more important to work together nationally and internationally to gather knowledge and experience. Ideally, this would create a digital platform on production techniques, effects of successful and less successful conservation efforts, databases on materials and samples and access to diagnostic equipment and willing experts to support these activities. It is important to raise awareness that gold leather is an endangered part of our cultural heritage.

Read more about leather conservation in Restauro 7/2016. Available here from October 10, 2016.

POTREBBE INTERESSARTI ANCHE
Wartburg Castle has been a UNESCO World Heritage Site since 1999. Photo: A.Savin - Own work, FAL, via: Wikimedia Commons

Wartburg Castle has been a UNESCO World Heritage Site since 1999.
Photo: A.Savin - Own work, FAL, via: Wikimedia Commons

Rising high above the Thuringian countryside, Wartburg Castle is one of the most representative cultural monuments in Central Europe. Since its inscription on the UNESCO World Heritage List, it has been one of the most outstanding testimonies to European history. Architecture, political events and literary tradition intertwine here to create a multi-layered cultural narrative.

The history of Wartburg Castle begins in the 11th century, when it was founded as the residence of the Ludovingian landgraves and from then on shaped the political power in the region. Even in the High Middle Ages, the palace, enthroned on a steep limestone cliff, was considered a masterpiece of late Romanesque architecture, whose design and ornamentation make it one of the most important secular buildings north of the Alps. This architectural heritage is evidence of the feudal character of Central Europe and forms one of the foundations for the later recognition as a World Heritage Site.
Wartburg Castle’s role as a center of courtly culture and memory grows through literary traditions such as the so-called Singers’ War, which was passed down in Middle High German poetry. At the same time, historical figures such as St. Elisabeth of Thuringia, whose life and work are closely linked to the castle, are becoming firmly established in the culture of remembrance. Even if some legends were mythically exaggerated, they still reflect the early symbolic value of the place in the cultural imagination.

The architectural appearance of Wartburg Castle is the result of a long development that underwent a profound transformation, particularly in the 19th century. After centuries of changing use and partial decay, the emerging Romantic period initiated a comprehensive restoration that was based less on a historically accurate reconstruction than on an idealized image of the Middle Ages. Under this premise, the Elisabeth Bower and richly decorated interiors were created, which today form an integral part of the complex.
From an art historical perspective, this combination of original 12th century parts and historicist additions is ambivalent: on the one hand, the preserved Romanesque building elements document the civil architecture of its time; on the other hand, the 19th century additions reflect the monument preservation and historical myths of the time. It was precisely this mixture of archaeological and symbolic authenticity that was taken into account in the UNESCO nomination, with the term “authenticity” not only referring to material originality, but also including the ideas and meanings anchored in the collective consciousness.

Wartburg Castle is more than just a stone relic – it is a place of profound cultural connections. Martin Luther’s stay here during his exile from 1521 to 1522, when he wrote the German translation of the New Testament from Greek in the so-called “Junker Jörg” room, was particularly influential. This achievement in the history of language had far-reaching consequences for theology, education and the German literary language as a whole and had a lasting impact on the cultural significance of the castle.
In the 19th and early 20th centuries, Wartburg Castle also became a symbol of national identity and political integration. Events such as the Wartburg celebrations of the German student movement became part of the collective memory, as did literary and musical adaptations in works by Richard Wagner, which romanticized the image of the medieval castle courtyard. Wartburg Castle also remains a living point of reference in cultural memory as an inspirational place for artistic debate.
In 1999, the site was inscribed on the UNESCO World Heritage List on the basis of two criteria: Firstly, as an “outstanding monument of the era of feudalism in Central Europe” (criterion (iii)) and secondly, as a site “rich in cultural references”, particularly emphasizing its connection to the history of the Reformation and the German unification movement (criterion (vi)). These criteria reflect the exceptional universal value that Wartburg Castle has beyond the borders of Thuringia. The castle not only documents the architecture and living environment of high medieval feudalism, but also exemplifies the profound influence of historical events and cultural upheavals on European civilization. The UNESCO designation therefore not only recognizes the material substance of the complex, but above all its role as a place of remembrance that inspires generations of visitors to reflect and research. The integrative perception of architecture, history and cultural impact makes Wartburg Castle a unique medium for communicating the past and present.
At a time when cultural heritage is increasingly being discussed in a global context, Wartburg Castle highlights the importance of historical sites as mediators of identity, memory and transnational understanding. Its place on the World Heritage List helps to secure this significance in the long term and make it tangible for future generations.

Safety – The Baumeister in April 2025 is here!

Building design

Will this makeshift barrier around the bronze statue actually help at night? Not sure ... Cover photo: Rona Bar & Ofen Avshalom / Connected Archives

“Security” in architecture means more than just barriers and alarm systems – there is much more to it than that. This issue sheds light on how buildings can provide protection – be it against the forces of nature, theft or social conflict. Your planners do not see security as a restriction, but as a design potential. In order to avoid repellent gestures, they often find security-relevant solutions in the building form. […]

“Security” in architecture means more than just barriers and alarm systems – there is much more to it than that. This issue sheds light on how buildings can provide protection – be it against the forces of nature, theft or social conflict. Your planners do not see security as a restriction, but as a design potential. To avoid repellent gestures, they often find security-related solutions in the building design.

Security – a word that is supposed to reassure and yet often has the opposite effect. We all long for it, but we also know that there is no such thing as absolute security. A building can protect against rain and cold, a city can be well planned – but can architecture really guarantee that we feel safe? Or does it only create an illusion? And in the end, isn’t the feeling of safety just as important as the safety itself?

The last year alone has shown us once again how fragile our built and lived environment is. Collapsing bridges, poorly maintained high-rise buildings and natural disasters that destroy entire neighborhoods. At the same time, fear of attacks in public spaces is growing, and in many cities measures are being taken to turn urban squares and buildings into high-security zones. But do we really need to turn our built reality into bastions of concrete and cameras in order to feel safe? Or is there a more intelligent answer to the question of protection?

Architecture cannot guarantee absolute security, but it can create trust. It can shape spaces that convey a sense of security without restricting freedom. Architecture has the unique potential to master precisely this balancing act. From fire and earthquake-proof school buildings to carefully considered designs for public spaces: Security architecture must not rely solely on control and barriers, but must enable trust and freedom. A clever choice of materials, for example, can preserve a feeling of openness without sacrificing protection. Ultimately, it must not be about sealing things off, but about proactive design.

Security must not become an aesthetic of mistrust. Walls, bars, barriers and confined spaces may minimize risks, but they also separate us from each other. All too often, they stifle life. The most popular place, both inside and out, is often where people meet, where light and transparency dominate, where architecture acts as a social bond and thus serves a greater purpose.

This issue is an invitation to rethink security. We show projects that prove that protection does not have to mean control, but trust. That architecture not only erects walls, but also builds bridges – between security and freedom, between control and openness. Because true security is not created by fear, but by clever (re)planning, by courageous design and by a society that does not close itself off, but proactively takes the helm. Enjoy reading!

Yours sincerely,
Tobias Hager

Editor-in-Chief
t.hager@georg-media.de

The magazine is available here in the store!

In March, our Baumeister issue was all about building on existing buildings and conversion. Read more about it here!