Modular Virtual Archive was an architectural design project that involved creating a building structure designed to function as both a physical museum and a virtual archive of architectural models. The virtual archive can expand infinitely as new exhibits are acquired, and the design method employed to achieve this expansion was based on shape grammars inspired by the Bauhaus teaching of the “φ” proportioning system. To generate both the museum and the archive of architectural models, rectangles were connected in their “φ” subdivisions. The physical museum allows visitors to interact with exhibits that have been enriched with information using augmented reality (AR). Meanwhile, an application was developed using the Unity Game Engine for the virtual archive, which allows visitors to interact with architectural models, read more information about them, and experience them in real scale while freely navigating through them.