Gonzalez, David MarcosLópez-Bragado, DanielJosé-Alonso, Jesús SanFernández-Martín, Juan JoséMartínez-Rubio, JoséAlvaro-Tordesillas, AntonioCampana, StefanoFerdani, DanieleGraf, HolgerGuidi, GabrieleHegarty, ZackaryPescarin, SofiaRemondino, Fabio2025-09-052025-09-052025978-3-03868-277-6https://doi.org/10.2312/dh.20253326https://diglib.eg.org/handle/10.2312/dh20253326The virtual reconstruction of lost heritage ensembles has become an essential tool for the research, conservation, and dissemination of cultural heritage. This paper presents the application of advanced digital methodologies-terrestrial and aerial photogrammetry, 3D laser scanning, and 3D modeling using Blender-to the Royal Monastery of San Benito of Sahagún (León, Spain), one of the principal centers of Cluniac monasticism on the Iberian Peninsula. Through an interdisciplinary approach, a rigorous digital model has been developed that integrates historical, documentary, and geometric sources, enabling a substantiated restitution of the architectural configuration of the complex. The results highlight the potential of digital technologies not only for the restitution of lost volumetric structures but also as a basis for preventive conservation strategies, academic research, and the creation of immersive experiences aimed at both specialist and general audiences, thereby contributing significantly to the heritage valorization of the site.Attribution 4.0 International LicenseCCS Concepts: Computing methodologies → 3D modeling; 3D imaging; Photogrammetry Applied computing → Cultural heritage; Virtual reality; Digital preservation; Document scanning, 3D scanningComputing methodologies → 3D modeling3D imagingPhotogrammetry Applied computing → Cultural heritageVirtual realityDigital preservationDocument scanning3D scanning10.2312/dh.202533267 pages