My study examines the industrial buildings realized between 1963 and 1990, the political transition in Hungary, developed through the collaboration between the Rába Hungarian Wagon and Machine Factory (Rába MVG) and the Győr Design Company (Győriterv), primarily from an architectural perspective. These industrial complexes represent a level of architectural and technical quality – broadly understood – that far exceeded the domestic average of the era. The quality-oriented and visionary client found a fitting professional partner in Győriterv’s architect, József Lőrincz. The halls, unprecedented in their time in both scale, formal and functional clarity, stand as exemplary cases of the exceptionally well-coordinated application of architectural and engineering knowledge. Owing to their success, similar facilities were also built for other actors in the Hungarian machinery industry. These buildings are of significance not only because of their industrial function, but also due to the role they played during the economic restructuring at the time of the regime change, forming a built legacy that remains in active use to this day. In addition to a brief overview of the factories themselves, the study focuses on the history of their construction – and in some cases, their design – while also outlining certain institutional aspects of the two socialist-era state-owned enterprises. The rich photographic documentation serves as a kind of time capsule, depicting how this industrial giant once looked and functioned. The primary sources of the research include archival materials, company publications, articles from the daily and professional press, as well as oral history interviews and an unpublished manuscript.