Benedictine Convent of St John at Müstair

World Heritage Research

Discover scientific research and academic studies that deepen our understanding of Benedictine Convent of St John at Müstair from its history and significance to its conservation, management, and contemporary challenges.

• 3D GPR assessment of the conservation state of a frescoed wall in the Monastery of St. John (Müstair, Switzerland)

  A Ground Penetrating Radar (GPR) study of the UNESCO-listed Benedictine Convent of St. John at Müstair reveals complex structural conditions in its frescoed walls, including a dual-layer plaster system, localized voids and fractures, and evidence of historic repair interventions. The investigation, conducted using 900 MHz and 2 GHz antennas, demonstrates GPR's effectiveness as a non-invasive tool for assessing conservation states in intricate historical architecture. These findings provide critical insights for targeted preservation efforts, confirming the method's potential to guide restoration strategies while preserving cultural heritage integrity.

  Punzo, M., Ferrari, I., Tarallo, D., Leucci, G., Cassitti, P., De Giorgi, L., Giuri, F., & Di Fiore, V. (2026). 3D GPR assessment of the conservation state of a frescoed wall in the Monastery of St. John (Müstair, Switzerland). Journal of Cultural Heritage, 81, 405–416. https://doi.org/10.1016/j.culher.2026.08.011

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• The Dating of Dolomitic Mortars with Uncertain Chronology from Müstair Monastery: Sample Characterization and Combined Interpretation of Results

  Radiocarbon dating of dolomitic mortars from the Benedictine Convent of St John at Müstair has revealed new insights into the chronology of the monastery's buildings, challenging previous assumptions about their construction periods. The study, which analyzed four mortar samples with uncertain dates (9th, 12th, and 15th centuries), integrated petrographic characterization with archaeological records to refine dating interpretations. Findings highlight the complexity of dating magnesian mortars due to their mineralogical variability and reaction conditions, offering a better understanding of both the monastery's history and the potential limitations of this method for archaeological contexts.

  Caroselli, M., Hajdas, I., & Cassitti, P. (2023). THE DATING OF DOLOMITIC MORTARS WITH UNCERTAIN CHRONOLOGY FROM MÜSTAIR MONASTERY: SAMPLE CHARACTERIZATION AND COMBINED INTERPRETATION OF RESULTS. Radiocarbon, 66(6), 1543–1555. https://doi.org/10.1017/rdc.2023.107

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• Prospecting the UNESCO World Heritage Site of Müstair (Switzerland)

  A groundbreaking discovery of over 40 large, deep burial shafts arranged in three rows outside the Benedictine Convent of St John at Müstair (Switzerland) sheds light on early medieval burial practices, potentially dating to the 6th century Lombard era. These findings challenge previous assumptions about the convent's territorial boundaries and highlight its significance beyond its enclosed walls. The study employed advanced geophysical techniques—archaeological magnetic surveys and ground-penetrating radar—to map previously unexplored fields adjacent to the UNESCO World Heritage Site. Additionally, the research uncovered a broad pathway identified as an original Roman road, along with intricate field systems and distributary channels that delineate the convent's natural borders on a massive alluvial fan. This pilot project expands our understanding of Müstair's historical landscape, revealing its complex layers from Carolingian to Roman periods.

  Schlegel, J., Verhoeven, G. J., Cassitti, P., Hinterleitner, A., Löcker, K., Schiel, H., Walser, C., Reitmaier, T., & Neubauer, W. (2021). Prospecting the UNESCO World Heritage Site of Müstair (Switzerland). Remote Sensing, 13(13), 2515. https://doi.org/10.3390/rs13132515

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• Stone Building in the Alps: Müstair Monastery in its Landscape Context

  Müstair Monastery, founded in AD 775 during the Carolingian period, stands out as a monumental stone structure amidst the small proprietary churches of the Adige Valley. This study reveals that such large-scale building projects were not only significant in their own right but also had profound impacts on landscape dynamics, including climate conditions, vegetation cover, natural resources, and settlement patterns. By analyzing the monastery's spatial context and construction methods, researchers demonstrate how early medieval monumental stone architecture served as a political instrument, influencing regional and European landscapes. The research combines long-term perspective analysis with spatial and material studies to evaluate the broader implications of monumental construction in the Alps.

  Hueglin Sophie, & Cassitti, P. (2021). Stone Building in the Alps: Müstair Monastery in its Landscape Context. Zenodo. https://doi.org/10.5281/ZENODO.7882754

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• Preliminary research on potential raw material sources for dolomitic lime mortars at St. John's convent at Müstair, Switzerland

  Research on the Benedictine Convent of St. John at Müstair reveals that while dolomitic rocks were likely the primary raw material for historic lime mortars, their high variability in crystal size and fabric makes them unreliable as direct indicators for provenance studies. However, the presence of silicate phases in underburnt relics may serve as potential proxies. The study combined Polarizing Light Microscopy (PLM) and X-ray Powder Diffraction (XRPD) analysis to investigate textural features and mineralogical composition, providing new insights into the historical construction practices of the Val Müstair region.

  Cavallo, G., Caroselli, M., Jornet, A., & Cassitti, P. (2019). Preliminary research on potential raw material sources for dolomitic lime mortars at St. John's convent at Müstair, Switzerland. Zenodo. https://doi.org/10.5281/ZENODO.7882646

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• Mortar samples from the Abbey of Saint John at Müstair: a combined spatially resolved X-ray fluorescence and X-ray absorption (XANES) study

  Advanced synchrotron-based techniques, including spatially resolved X-ray fluorescence (XRF) and X-ray absorption near-edge structure (XANES), reveal the chemical composition and structural details of mortar samples from the 8th-century Benedictine Convent of St John at Müstair. The study identifies key elements and their distributions within the mortar, providing insights into its historical formulation and potential degradation processes. By combining these high-resolution methods, researchers uncover the intricate chemistry of this UNESCO World Heritage Site's construction materials, offering a deeper understanding of medieval craftsmanship and conservation challenges.

  Hormes, J., Xiao, Q., Hu, Y., Bläuer, C., Diekamp, A., Goll, J., & Bovenkamp, G.-L. (2015). Mortar samples from the Abbey of Saint John at Müstair: a combined spatially resolved X-ray fluorescence and X-ray absorption (XANES) study. Journal of Analytical Atomic Spectrometry, 30(3), 702–706. https://doi.org/10.1039/c4ja00401a

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