The altar of Castle Tyrol - a reliquary retable with painted wing panels - was created around 1370/72, making it probably the oldest altarpiece in the Alpine region. In preparation for its restoration, from 2016 to 2021 it was examined in the Tyrolean Museum of Provincial History using art-technological means. Studies of the wooden construction were implemented with the help of X-rays and 3-D models. The painting technique and materials were examined using a stereo microscope, infrared reflectography, and sample analyses. In addition to analysis of the restoration history, the altarpieces origin and its installation in the former Castle Tyrol, a reconstruction of the details of depiction and the ornaments of the patrons brocade vestments was completed. The results of research on the impressive 14th century reliquary retable are now being presented in this publication. - A comprehensive art-technological analysis of the retable Informative detailed and microscopic photographs Exhibition: 2022 to 2023, Ferdinandeum Innsbruck; 2.7.2023 to 19.11.2023, Castle Tyrol Look inside

Laura Resenberg, Studium am Lehrstuhl für Restaurierung, Kunsttechnologie und Konservierungswissenschaft an der TU München. Seit 2016 Leitung der Restaurierungsabteilung der Tiroler Landesmuseen und Initiatorin des Forschungsprojekts zum Altar Schloss Tirol. Cristina Thieme, Studium an der Hochschule der Künste in Bern. Von 1997 bis 2014 wissenschaftliche Mitarbeiterin am Lehrstuhl für Restaurierung der TU München. 2007 Promotion über: Das Tafelbild aus der Kathedrale von Trogir. Kunsttechnologische Studien zur Tafelmalerei Dalmatiens des 13. Jahrhunderts". Forschungsschwerpunkte: Kunsttechnologie.