Complex demands in the field of cultural heritage preservation often require a multidisciplinary approach and substantial volumes of multimodal data integration and management. The conventional approach to tackling these issues revolves around using different H-BIM (historical building information model) solutions. This paper presents a prototype for a web platform that moves closer to the idea of a digital twin for physical cultural assets. Based on a light development framework, it is designed for online open access and features a versatile custom 3D viewer for intuitive interaction with the presented data. The concept requires a workflow similar to the video-game industry’s 3D asset optimization to generate highly detailed 3D models and to facilitate the display of multilayered imaging data. The technological stack features a minimal MVC architecture framework and front-end stylesheets. It is designed to be independent of specific databases, enhancing portability for potential future open-source releases. Moreover, the platform employs WebGL libraries to create a dynamic 3D environment interaction. The capabilities of the web platform were tested in a case study regarding the documentation of an important 17th-century church in Romania. Further developments and current limitations of the platform are also discussed.

Romania’s wooden churches, numbering over 1400, represent a unique and valuable cultural heritage. However, their preservation faces challenges due to degradation and insufficient documentation regarding their condition and significance. This paper presents innovative approaches to documenting these monuments using two representative online platforms. The “Biserici Înlemnite” platform focuses on inventorying wooden churches through a systematic methodology, while the 3D-VIMM platform provides a multimodal imaging and 3D data visualization solution aimed at creating digital twins for heritage assets. Advanced technologies, such as 3D digitization and Historical Building Information Modeling (H-BIM), enhance accessibility and precision in conservation planning. While H-BIM traditionally requires complex workflows, the 3D-VIMM platform simplifies the process by integrating diverse imaging techniques—visible, thermal, multispectral—and metadata within an intuitive interface. This enables interdisciplinary collaboration among historians, architects, conservators, and engineers. A case study from Arad County illustrates a possible path to the integration of these platforms, highlighting their potential to optimize data collection, prioritize interventions, and support long-term preservation strategies. The article underscores the importance of transdisciplinary methodologies in addressing the critical state of Romania’s wooden churches and provides insights into scalable solutions for heritage documentation and conservation.