Publications
City-scale analysis of PV potential and visibility in heritage environment using GIS and LiDAR
A city-scale analysis reveals that Budapest, despite its dense urban environment and heritage protection constraints, holds significant potential for rooftop photovoltaic (PV) energy generation. The study, leveraging GIS and LiDAR data, estimated the PV capacity of nearly 190,000 buildings, considering factors like roof slope, orientation, and global irradiation. It introduced an open-access tool, the Budapest Solar Map, providing decision-makers with solar PV data. However, heritage protection regulations limiting visibility in this UNESCO World Heritage Site pose challenges to fully utilizing this potential.
Rescue and Betrayal
During the Arrow Cross regime in Budapest, survival for Jews and others targeted by the fascist government hinged on two strategies: active rescue through hidden refuge or spontaneous, desperate actions to evade capture. While rescue efforts were concentrated in Budapest, they were often met with brutal repression, including communal denunciations that facilitated the identification of victims. A notable incident involved a small detachment that attacked Arrow Cross guards on Andrássy Avenue 47, killing one and wounding another, but ultimately failing due to the severe consequences faced by those involved. The study reveals that denunciations were widespread and played a crucial role in the regime's 'success' in hunting down victims, with even non-Jewish individuals like Gyula Merlin becoming targets due to malicious reports.
War heritage impact on museum dynamics in Budapest: a multidimensional analysis of visitor satisfaction through cultural, statistical, and netnographic modalities
Budapest's war-themed museums, particularly those focused on World War and Cold War history, are experiencing significant growth in visitor satisfaction and attendance, both domestically and internationally. This study reveals that these institutions, including traditional sightseeing sites and emerging 'hidden treasures' like bunkers, play a pivotal role in the city's tourism landscape. By analyzing cultural, statistical, and netnographic data, the research identifies key motivations behind visitor demand while addressing interpretative challenges tied to sensitive historical narratives. The findings suggest that leveraging Budapest's war heritage could be a strategic approach to post-COVID tourism recovery, aligning with the preferences of more informed and responsible travelers. This study underscores the potential for safe, local attractions to drive sustainable tourism growth in the city.
Implementation Instruments for Developing Sustainable Tourism on Recultivated Land in the Middle Danube Flow
Sustainable tourism on recultivated land along the Middle Danube Flow can achieve high-quality, conflict-free outcomes through strategic planning, stakeholder engagement, and balanced development. This study identifies key approaches—such as careful location selection, appropriate land use, and alignment between conservation and tourism—that enable the creation of desirable tourist products without compromising sustainability. By comparing two case studies in Budapest (a UNESCO World Heritage Site), researchers highlight a methodological framework that fosters cooperation among stakeholders, moving beyond mere compromise to solutions valued for both quality and desirability.
Lithium concentration in tap water, bottled mineral water, and Danube River water in Hungary
A recent study reveals that lithium concentrations in Hungarian tap water, bottled mineral water, and Danube River water vary significantly depending on the source. Groundwater exhibits the highest median lithium concentration at 8.55 µg/L, followed by surface water from open reservoirs (5.02 µg/L) and bank-filtrated river water (3.52 µg/L). Bottled mineral waters show a wide range of concentrations, from 4.2 to 209 µg/L, with a median of 17.8 µg/L. The Danube River, a key water source for drinking water utilities using bank filtration, has mean and median lithium concentrations of 2.78 and 2.64 µg/L, respectively. The study also found a correlation between lithium and potassium concentrations but no significant correlations with other elements. This research provides critical insights into the current status of lithium in Hungarian aquatic environments, which is relevant given the increasing production and recycling of lithium batteries globally.
New Places in Old Spaces
Budapest's post-1989 transformation highlights the complex interplay between tourism, cultural regeneration, and urban development. The study reveals that while new symbolic statuses, such as World Heritage recognition, and repackaged itineraries (e.g., the Cultural Avenue project) have enhanced the city's appeal, they also raise challenges in balancing heritage conservation with economic growth. Socialist-era structures, like those in Statue Park, are being marginalized to make way for modern cultural and business spaces, reflecting broader shifts in power dynamics. The research underscores the need for careful tourism management to ensure sustainable development that benefits both the city's global competitiveness and local quality of life.
Surveying methods and instruments for heritage properties, using decision tree and Artificial Neural network analysis
A study on Budapest's UNESCO World Heritage Sites reveals that monocentric and polycentric urban design elements can enhance green spaces and improve urban life quality. Using a dataset of 1,031 apartments in Teréz Town, the research applied Decision Tree and Artificial Neural Network analyses to assess property value inequalities based on condition and conveniences. The findings highlight historical architectural experiments and their morphological-functional changes relative to the city center, offering insights for long-term urban planning and investment decisions. Notable examples include the Andrássy/Hübner Court and the ICOMOS prize-winning renovation of the Wahrmann Palace.
Living Heritage in the Urban Landscape. Case Study of the Budapest World Heritage Site Andrássy Avenue
Urban allées, designed to symbolize permanence, often face threats from 20th-century development, leading to the loss of mature trees and necessitating replantation with urban-tolerant species. A study on Budapest's Andrássy Avenue reveals that despite reconstruction efforts, these linear green spaces remain endangered. The research conducted in 2020–2021 analyzed the avenue’s tree stock and urban green infrastructure, highlighting the need for new heritage protection strategies. It suggests that integrating urban green ecosystems could enhance liveability while preserving historical character. This case study underscores the importance of balancing ecological restoration with cultural preservation in modern urban planning.
Jewish Heritage in the Creative Cities of Central and Eastern Europe: Tourism, Technologies and Prosthetic Memory
Contemporary mobile multimedia technologies are transforming the way tourists engage with Jewish heritage and memory sites, particularly in UNESCO Creative Cities of Central and Eastern Europe. These digital tools, including root-diaspora tours and apps, serve as 'prosthetic memory,' enhancing visitors' connections to cultural landscapes while also reshaping tourism practices. The study analyzes how cities like Budapest, Kraków, Prague, Kaunas, Warsaw, and Vilnius integrate Jewish heritage into multimedia experiences, revealing their role in materializing Holocaust memory and fostering responsibility to remember. These technologies not only provide practical navigation but also incorporate augmented reality, photos, and Jewish itineraries, fundamentally altering the relationship between travelers, cultural heritage, and collective memory.
Occurrence of pharmaceuticals in the Danube and drinking water wells: Efficiency of riverbank filtration
A study reveals that riverbank filtration is highly effective at removing most pharmaceuticals from the Danube, with efficiencies exceeding 95% for the majority of compounds. However, four specific pharmaceuticals—carbamazepine, lidocaine, tramadol, and lamotrigine—showed low filtration efficiency (<50%), posing a challenge to ensuring safe drinking water supply. The research analyzed 111 pharmaceutical active compounds (PhACs) across five sampling periods, comparing concentrations in the Danube with those in nearby drinking water abstraction wells. While most PhACs were effectively filtered, their sporadic appearance in wells suggests variability influenced by environmental conditions and well operation dynamics. This finding underscores the need for adaptive strategies to manage emerging contaminants in urbanized river systems.
Dunai történet Budapesten : A Graphisoft Park jövőtudatos fejlesztése
Graphisoft Park, a former industrial site transformed into a business park and university campus, exemplifies forward-thinking urban development in Budapest. The project, initiated by Graphisoft, the creator of ArchiCAD® software, showcases high-quality contemporary Hungarian architecture deeply rooted in the site's built and natural heritage. Unlike traditional private real estate developments, this 25-year evolution demonstrates a dynamic adaptation to its urban surroundings, initially oriented towards the Danube but later integrating with adjacent areas. The study highlights the park's strategic development process, illustrating how private investment can harmonize with historical context while responding to future urban needs.
New sites from the Scythian Period on the right bank of the Danube : Data to the Connections of the Vekerzug and Hallstatt Cultures from the Territory of Budapest
Recent archaeological research in Budapest has uncovered new sites from the Scythian Period, providing significant evidence of cultural connections between the Vekerzug and Hallstatt cultures along the right bank of the Danube. The study, conducted by Farkas Márton Tóth, reveals insights into the material culture and societal interactions of these periods, contributing to a better understanding of the region's prehistory. Through systematic excavations and analysis of artifacts, the research highlights the dynamic exchange of cultural elements between these two distinct but interconnected groups during the late Bronze Age and early Iron Age.
Behavior of Organic Micropollutants During River Bank Filtration in Budapest, Hungary
A six-month study in Budapest revealed that river bank filtration significantly reduces concentrations of certain organic micropollutants, with some compounds showing up to 78% removal efficiency. Bisphenol A, carbamazepine, and sulfamethoxazole exhibited minimal reduction (<20%), while others like 1H-benzotriazole and diclofenac demonstrated substantial attenuation during filtration on Szentendre Island and Csepel Island. The research analyzed 36 emerging micropollutants in Danube River water and bank filtrate, highlighting the potential of this natural process to improve water quality by lowering pollutant levels.
Rehabilitation of historical bridges over the Danube in Budapest
Historical bridges over the Danube in Budapest, including the Széchenyi Chain Bridge, Margaret Bridge, Liberty Bridge, and Elizabeth Bridge, have undergone significant rehabilitation efforts to preserve their UNESCO World Heritage status. The study highlights the unique design challenges and advanced site measurements used during reconstruction, ensuring structural integrity while maintaining historical authenticity. For two recently reconstructed bridges and one planned case, detailed analyses supported the rehabilitation process, balancing modern engineering with heritage conservation. The Elizabeth Bridge is also introduced, contrasting its old and new structures to illustrate the complexities of preserving such iconic landmarks.
Urban planning and tourism in European cities
European capital cities, including Budapest, serve as both national symbols and global tourist destinations, raising critical questions about the balance between monumental heritage representation and sustainable urban living amid rising tourism. This special issue examines how these cities—spanning Berlin to Skopje—navigate the interplay between urban planning, cultural identity, and economic/social carrying capacity. Through case studies, it reveals tensions between heritage preservation, urban development, and the growing demands of mass tourism, offering insights into the evolving dynamics of European cityscapes.
Non-planning and tourism consumption in Budapest's inner city
Budapest's District VII exemplifies how unstructured urban planning can both hinder and facilitate tourism-driven development. The study reveals that despite limited official regulation, the district has become a hotspot for hospitality and creative industries, particularly 'ruin bars' and Airbnb accommodations, which have thrived due to their informal, adaptive nature. This case highlights Budapest's unique trajectory as a post-socialist city, where slow gentrification and lack of planning paradoxically fostered innovative tourism consumption models. The research addresses two key questions: the extent to which non-planning influences urban development and tourism trends, and how tourism reshapes inner-city districts. It combines historical analysis with data on 'ruin bars' and Airbnb's global impact, offering insights into the unintended consequences of unregulated urban growth.
World Heritage Sites through the Eyes of New Tourists – Who Cares about World Heritage Brand in Budapest?
Tourists visiting Budapest's UNESCO World Heritage Sites often overlook the significance of these designations, despite their cultural importance. A study analyzing Tripadvisor reviews revealed that while visitors appreciate the attractions and experiences offered by sites like Buda Castle Quarter and Andrássy Avenue, they are largely unaware of their UNESCO status. This research underscores the potential for place branding and new technologies to enhance visitor awareness and engagement with heritage values. The analysis also highlighted areas for improvement in interpretation, attraction management, and overall visitor experience, suggesting that leveraging digital tools could effectively draw attention to the authentic cultural value of these sites.
A Perlmutter-gyűjtemény
Alfréd Perlmutter's eclectic art collection, blending Eastern and Western influences, showcases his unique aesthetic sensibility that transcended historical periods. The study reveals how Perlmutter's refined taste, inspired by international travels and exposure to elite collections, resulted in a harmonious fusion of Chinese ceramics, Flemish tapestries, and Renaissance Italian works. However, the collection suffered significant losses during World War II due to forced sales, expropriations, and displacement, with only a fraction surviving in museum holdings or private hands. The research highlights the fragility of private art collections in times of political upheaval, emphasizing the irreversible impact of historical events on cultural heritage.
Analysis of drip water in an urban karst cave beneath the Hungarian capital (Budapest)
Urban pollution significantly alters the natural hydrochemical processes in karst caves, as demonstrated by a study of drip water in Budapest's Pál-völgyi Cave System. Researchers found that anthropogenic factors—such as de-icing agents and reduced land cover—dominate water quality at shallow, fractured sites (TG), whereas deeper, tectonically stable areas (YC) retain stronger natural periodicity linked to karst processes. Time-series analysis revealed that while pH and redox potential (Eh) showed mature diurnal cycles at both sites, electrical conductivity exhibited far less periodic behavior in polluted zones (21% vs. 56% at YC). These findings highlight the vulnerability of urban caves to human activity, offering critical insights for conservation efforts.
Food and Menu in The Frontline and in Restaurants in Homeland – What did Civilians and Soldiers Consume During the Great War?
During the Great War (1914–1918), Budapest's restaurants demonstrated remarkable creativity and innovation in overcoming food shortages, offering rich and diverse wartime menus. This study highlights how historical archives—collecting restaurant menus and civilian/soldier accounts—can enrich war heritage sites by providing authentic, multisensory experiences. By analyzing these resources, researchers uncover the adaptability of wartime gastronomy, a relatively understudied aspect of World War I history. The findings suggest that such archives hold significant potential for educational and commemorative purposes, bridging historical documentation with immersive storytelling.
Impact of current riparian land on sediment retention in the Danube River Basin
Current riparian land in the Danube River Basin significantly reduces sediment fluxes, contributing to improved water quality and ecological conditions. The study found that despite occupying only 2% of the basin, riparian vegetation decreases sediment yields by about 8%, with a median efficiency of 50% at the hillslope scale. Sediment retention is most efficient in smaller reaches and areas with higher incoming sediment loads, while streambank protection plays a crucial role in high-stream-power regions like the Sava and Danube Rivers. Using the SWAT model, researchers quantified sediment reductions under current conditions (1995–2009) and compared them to scenarios without riparian land, revealing substantial benefits for freshwater ecosystems.
Design Competition for the Fonciére Palace, Andrássy Avenue, Budapest – A Pivotal Moment
The Fonciére Palace, a neo-Renaissance building on Andrássy Avenue in Budapest, underwent a pivotal design competition in the 1880s that shaped early architectural culture in the city. Adolf Feszty's winning design featured a monumental cupola at its corner, which significantly enhanced its urban impact but was destroyed during World War II and later removed. The absence of this element has drastically reduced the building's architectural value, highlighting the competition's historical significance. This study analyzes the competition's stages and Feszty's role, emphasizing how architects' responses to the palace's urban setting became a defining aspect of its design legacy.
Explanatory Factors of the Expansion of Recreation Function on the Bank of Danube River in Budapest
Urban waterfronts, such as Budapest's Danube River banks, increasingly serve multifunctional roles beyond their original purpose. A study identifies key factors driving the expansion of recreational functions along these areas, highlighting economic, social, and environmental influences. The research employs a mixed-method approach, combining quantitative analysis with qualitative assessments to examine trends in tourism development, urban planning policies, and visitor behavior. Findings reveal that strategic investments in infrastructure, coupled with effective governance, significantly enhance recreational use while preserving cultural heritage. This work provides actionable insights for balancing development with conservation in UNESCO-listed sites.
Metro line no.1 in Budapest
Budapest's Metro Line No.1, inaugurated in 1896, stands as one of the first continental underground electric tramlines and a pioneering example of urban infrastructure development during the late 19th century. Constructed in just 21 months by local entrepreneur Robert Wünsch, with bogie carriages from Schlick Forgery and electrical components by Siemens und Halske, this metro line symbolized technological advancement and urban modernization. Its steel and concrete structure stations, adorned with artistic tiles from the Zsolnay factory, reflect the opulence and innovation of the era. Recognized as a UNESCO World Heritage Site in 2002 alongside Andrássy Avenue, the metro line is also a candidate for IEEE Milestone status, underscoring its historical significance in transportation technology.
On Public Issues and Public Spaces – a Design Course Focusing on the Danube Bank in Budapest
Public spaces in modern cities are shaped by complex sociophysical interactions that extend beyond mere construction, challenging traditional definitions of public space. Research indicates that collaborative designs integrating architecture and environmental psychology create more gratifying environments for both humans and the environment. Watersides, such as those along the Danube in Budapest, serve as critical focal points for addressing public issues due to their unique role in shaping urban landscapes.
Turbulent history, troublesome heritage: Political change, social transformation, and the possibilities of revival in the “Old Jewish Quarter” of Budapest
Budapest's Inner 7th District, or Belső-Erzsébetváros, stands out among Central European Jewish quarters due to its unique survival narrative. Unlike other regions where Jewish populations were largely decimated during the Holocaust, a significant portion of this district's inhabitants endured, shaping its post-war identity distinctly. This study reveals how political upheavals and societal transformations—marked by ethnic and confessional intermixing in the interwar period—were disrupted by wartime events, leading to dramatic demographic shifts by 1945. It further explores the impact of post-war migration and Communist-era decay on the district's physical and social fabric, while highlighting its recent revival through the rediscovery of Jewish heritage. The research employs historical analysis and comparative urban studies to trace these changes, offering insights into the resilience and reinvention of this UNESCO-listed area.
3 in 1 reconstruction of monument Margaret Danube-bridge in Budapest, Hungary
A groundbreaking '3 in 1' reconstruction approach successfully addressed the structural, traffic, and monument preservation challenges of Budapest's iconic Margaret Danube-bridge, a 137-year-old steel arch structure within UNESCO World Heritage. The study demonstrated that integrating structural reinforcement with modern traffic demands while maintaining historical integrity is feasible through innovative design solutions. Researchers analyzed the bridge's condition, traffic needs, and heritage constraints to develop a final design that balanced these factors, offering valuable insights for similar heritage site restoration projects.
Democracy in Ruins: The Case of the Hungarian Parliament
A neo-Gothic masterpiece, the Hungarian Parliament building in Budapest, stands as a striking contrast to the narrative of Central European democracy's emergence in 1989. Commissioned over a century before communism's fall and inaugurated in 1902, it was once the world's largest and most impressive parliament building. This architectural marvel challenges conventional timelines by illustrating that democratic institutions, as embodied in grand legislative structures, predated the region's political transformations. The study examines this paradox through historical analysis, questioning how such monumental democratic symbols coexisted with authoritarian regimes, thereby offering a nuanced perspective on democracy's material and ideological manifestations.
Evaluating Indicators for Renewal of Properties via Gentrification in Budapest
Gentrification in Budapest's Andrássy Avenue, part of the UNESCO World Heritage site since 2002, drives property prices up significantly post-architectural renewal but leaves flats in poor condition unaffected. The study identifies three key research indicators—economical, social, and architectural—to model gentrification impacts using descriptive statistics and factor analysis. It reveals that young, highly educated residents are drawn to renewed areas like Liszt Ferenc Square, while facility managers must tailor maintenance budgets to the social profiles of property owners. The case study of a renewed residential palace in Teréz Town underscores how rent-gap dynamics and functional shifts shape urban renewal processes.
First continental underground electric railway, Budapest 1896
Budapest's M1 subway line, inaugurated in 1896 as the first continental underground electric railway, remains a testament to its adaptive capacity over more than a century. Originally designed by Siemens & Halske to extend Andrássy Avenue, this 3,690-meter-long line connected the inner city to Városliget park, predating other European counterparts except London's. Despite significant restructuring in the 1970s and refurbishment in 1994–1996—due to increased traffic and network expansion—the M1 line has retained its functionality and integration into Budapest’s transport system. This case study underscores the enduring significance of innovative urban planning and infrastructure adaptation, demonstrating how early engineering solutions can evolve to meet modern demands while preserving historical integrity.
Andrássy út 96.: egy másik Herzl Tivadar háza. A Herzl-Hernádi – Szász-Koburg – Gothai hercegi – ideiglenes köztársasági elnöki palota
A unique architectural complex on Andrássy Avenue in Budapest, originally built as a private palace by Theodor Herzl and later expanded with rental housing, reveals a rare fusion of palatial and residential structures. The study highlights the building's transformation from a three-story neo-Renaissance residence into a mixed-use property after an 1890 extension designed by Lajos Ray Rezső, creating a visually unified courtyard despite functional divergence. Restoration work uncovered original decorative elements, including gilded pilaster capitals and painted coffers, while historical records trace its ownership from the Herzl family to Prince Philip of Saxe-Coburg-Gotha and, later, its role as an interim presidential palace during Hungary's post-WWII transition. The research underscores the building's architectural significance as a rare example of adaptive reuse in Budapest's heritage landscape.
Articulating Identity through the Technological Rearticulation of Space: The Hungarian Millennial Exhibition as World’s Fair and the Disordering of Fin-de-Siecle Budapest
The Hungarian Millennial Exhibition of 1896 served as a pivotal event in shaping Budapest's identity and urban development, acting as both a real and symbolic world's fair. This exhibition accelerated modern urban expansion, redefining Hungary's imperial partnership with Austria through multisensory experiences that engaged international and regional audiences. The project led to significant architectural developments, including the refinement of Andrássy Avenue, the construction of the Hungarian Parliament building, and the introduction of Budapest's underground subway. These interconnected building projects transformed the cityscape, reflecting broader cultural and political aspirations while disordering the social fabric of fin-de-siècle Budapest.
Monitoring of Landscape Combinations and Concourses in the Hungarian Danube‐Bend
Research reveals significant heavy metal pollution in the Hungarian Danube-bend, particularly near Highway No. 2 and the Danube bank, with concentrations of toxic metals like lead and cadmium in plant species such as Salix alba and Plantago major exceeding those in protected areas like Duna-Ipoly National Park by 5–8 times. The study highlights the primary sources of pollution—industrial activity along the highway and riverbank contamination—as critical threats to the region's biodiversity, including protected flora. Using plant samples for bio-monitoring, the research demonstrates how landscape combinations influence pollutant accumulation, emphasizing the need for localized environmental protection strategies to mitigate industrial and economic impacts on this UNESCO-recognized cultural and natural heritage site.
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