Publications
Stone monuments and abandoned quarries –ways of restoration in Germany through times
Restoration of stone monuments in Germany faces significant challenges due to the closure of original quarries, leaving no suitable substitute materials. This study examines six iconic structures—Cologne Cathedral, Freiburg Münster, the Stone Bridge in Regensburg, Kaiser-Wilhelm-Monument at Porta Westphalica, Old National Gallery in Berlin, and the Picture Gallery of Sanssouci Palace in Potsdam—to analyze how replacement stones were selected under varying economic and political conditions. Two cases involved temporarily reactivating old quarries, while others relied on alternative materials. Notably, one restoration was reversed when the original stone became available again. The research highlights the decision-making processes, trade-offs, and lessons learned from these approaches, offering insights into sustainable heritage conservation strategies.
Chapter 16: 1826, Jacobi
In 1826, Carl Gustav Jacob Jacobi made significant advancements in the development of orthogonal polynomials, a foundational concept in mathematics. Born in Potsdam, then part of the Kingdom of Prussia (now Germany), Jacobi's work laid the groundwork for understanding these polynomials, which are essential in numerical analysis and theoretical physics. His contributions were pivotal during the reign of Frederick the Great, when Potsdam flourished as an administrative and cultural center, particularly under the patronage of the Prussian royal house. The study explores how Jacobi's mathematical innovations emerged within this historical context, highlighting their enduring impact on both mathematics and science.
Heritage Protection as Progressive Urbanism Defending the Legacies of the Welfare State
Berlin's UNESCO World Heritage Sites, including the Palaces of Potsdam and Berlin and Museum Island, are often overshadowed by a lesser-known third site: the Berlin Modernism Housing Estates. Constructed between 1910 and 1933, these six housing estates represent innovative urban planning and architecture that significantly improved living conditions for low-income residents during Berlin's socially progressive Weimar Republic era. These estates introduced novel typologies that influenced global housing development, showcasing the city's forward-thinking approach to welfare state policies. The study highlights their exceptional architectural and urban design legacy, which continues to shape modern urbanism worldwide.
Europäisches Zentrum für Jüdische Gelehrsamkeit. Denkmalgerechter Umbau des Nordtorgebäudes und der Orangerie am Neuen Palais im Schlosspark Sanssouci
A significant transformation of the Nordtorgebäude and former Orangerie within the UNESCO World Heritage Site 'Schlösser und Parks von Potsdam und Berlin' has given rise to a vibrant, academic campus. This development is part of the Europäisches Zentrum für Jüdische Gelehrsamkeit (European Center for Jewish Scholarship), the first post-Shoah institution in Central Europe dedicated to training rabbis and cantors. The renovation project, conducted with meticulous attention to historic preservation, integrates these structures—alongside Potsdam's first synagogue—into a dynamic educational and cultural hub. This initiative not only revitalizes a historically rich site but also symbolizes the resurgence of Jewish scholarship and heritage in Germany.
Aftermaths
Despite being politically taboo, Prussia remained a significant and persistent influence in post-war East Germany. This study reveals how the German Democratic Republic (GDR) grappled with its Prussian legacy, which complicated efforts to construct a coherent historical narrative for the state. Through case studies of key Prussian architectural sites—such as the Berlin Schloss, Potsdam City Palace, and Potsdam Garnisonkirche—the research demonstrates that while the SED sought to erase or repurpose these symbols, they could not fully eliminate Prussia's presence from the collective memory. The chapter employs historiographical analysis to show how theoretical frameworks in GDR historiography both reflected and resisted this erasure, highlighting the enduring tension between political ideology and historical reality.
Demolishing Modernism: GDR and Neo-Prussian Architecture in Berlin
Recent architectural transformations in Berlin and Potsdam reveal a deliberate effort to reshape urban memory through the demolition of modernist structures and their replacement with neo-Prussian replicas. Notably, the 2006 demolition of the Palace of the Republic—a symbol of GDR-era politics—was followed by the construction of an eighteenth-century replica, now housing the Humboldt Forum, a museum dedicated to non-Western art. This pattern of iconoclasm and revival suggests a broader strategy to redefine Berlin's historical narrative, blending political symbolism with architectural nostalgia. The study examines these demolitions through the lens of iconoclastic precedents in art and architecture, highlighting their implications for urban identity and memory.
Response of Growth to Climate within Oaks of the World Heritage Site of Prussian Gardens
Oaks within the UNESCO World Heritage Site 'Palaces and Parks of Potsdam and Berlin' exhibit site-specific drought sensitivity, with growth significantly influenced by precipitation levels from the previous year's July and September, as well as current May to July. This correlation is strongly linked to soil moisture conditions, highlighting the critical role of adequate water availability in oak xylogenesis. The study employed dendrochronological techniques, including correlation analyses, moving correlations, pointer year analyses, and superposed epoch analyses (SEA), to assess climate-growth relationships and their stability over recent decades. While declining growth trends were observed, these are attributed to the natural aging of trees rather than solely to changing climatic conditions.
Can a Garden be the Place of Cultural Integration? Sacral Aspect of Contemporary Garden Exhibitions in Germany
Garden exhibitions in Germany serve as significant spaces for cultural integration, with sacral elements playing a pivotal role. These exhibitions, including 13 exhibition areas from eight events (such as the IGA and BUGA), incorporate religious and cultural references in various forms—ranging from large-scale green temples to small chapels and theme gardens. The study reveals that sacral aspects are integral to human life, fostering social cohesion and preserving cultural traditions. This recognition underscores the importance of religious motives in contemporary garden exhibitions, demonstrating their ability to function as both temporary landscape accents and permanent landmarks. By analyzing these exhibitions, the research highlights the enduring relevance of faith and religion in shaping community identity and landscape design.
An 1834 Mediterranean Garden in Berlin
A groundbreaking semi-immersive interactive gallery installation, created in 2004, visualized Peter Joseph Lenné's 1834 Mediterranean garden at Schloss Sanssouci, Potsdam. This innovative project featured highly detailed plant renderings on a panoramic display with a tangible interface, attracting around 20,000 visitors. The research highlights the uniqueness of this interaction design, which remains unparalleled in its approach. Additionally, the study introduces new book and table/door-format mockups and explores future prospects using Freeman Dyson's heuristic, projecting scenarios for 2018, 2032, and 2202. This exercise offers potential applications across diverse domains.
Berlin
Berlin, during the late 18th and early 19th centuries, emerged as a significant cultural and political hub in Europe. The city's transformation from a war-ready capital under Frederick II to a symbol of Prussian grandeur under Frederick William III is highlighted by its architectural legacy, including palaces and parks in Berlin and Potsdam. Johann Wolfgang von Goethe's brief visit in 1778 captures the city's dynamic atmosphere, while key military events such as Napoleon's defeats at Grossbeeren (1813) and Leipzig marked pivotal moments in European history. The study underscores Berlin's evolving role as a center of power, memory, and architectural representation, reflecting the ambitions of Prussian kings and their enduring influence on the city's landscape.
Recent literature on bryophytes — 119(1)
Recent research on bryophytes highlights significant advancements in understanding their ecology, conservation, and biological interactions. A study by Muller (2014) documented the moss flora of Potsdam's Sanssouci Park, providing a detailed inventory that contributes to biodiversity monitoring in urban green spaces. Muster et al. (2015) explored 'Sphagnum farming' as a potential conservation strategy for peat bog species, offering insights into sustainable practices for threatened habitats. Na et al. (2015) analyzed Middle Jurassic palynology from Inner Mongolia, linking fossil data to paleobiological and paleogeographical reconstructions. Meanwhile, Nelson et al. (2015) introduced digitization workflows for plant, algae, and fungi collections, advancing herbarium-based research through technological innovation. Other studies, including those by Nishihama et al. (2015) on liverwort regeneration and Novotný & Mudrova (2015) on the rare copper moss Streptocolea atrata, delved into specific species' biology and conservation challenges. Collectively, these works underscore bryophytes' ecological importance while addressing gaps in their study through innovative methods.
Michiel Matthijsz Smids (Rotterdam 1626-Berlijn 1692). Keurvorstelijk bouwmeester in Brandenburg
Michiel Matthijsz Smids (1626–1692) emerges as a pivotal figure in 17th-century Brandenburg's redevelopment, notably for his role as the elector of Brandenburg's courtly building master. While not an architect himself, Smids executed designs by Johann Gregor Memhardt and others, contributing to significant projects such as the Oranienburg Palace, Berlin fortifications, and infrastructure like the Müllrose channel and locks. His Dutch influences, financial acumen in wood trading, and ability to pre-finance large-scale projects enabled him to amass substantial wealth while overseeing diverse construction endeavors across Potsdam, Berlin, and other towns. Though few of his works survive today, Smids' central role in a network of builders and craftsmen underscores his enduring impact on Brandenburg's architectural landscape.
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