MAIN architects held a guest lecture in Zagreb at Urania-Space of creation which hosted the event “Sustainable hour: Sustainability of Industrial Buildings”. The focus was on designing industrial spaces to meet new ecological standards and sustainability goals. It was an honor for us to share our experience in designing industrial buildings by presenting our project for the new Feniksbus factory, which will produce electrical mini and midi buses in Novi Sad, Serbia. We emphasized the presence of sustainability as an integral and intuitive element in the contemporary and pragmatic approach to designing and constructing buildings. This perspective extends beyond a purely environmental focus, incorporating a comprehensive approach to sustainability and optimization. It includes the functionality and cost-effectiveness of the building (economic aspect), the social aspect seen as fostering functional harmony among diverse user groups, and the resilience, flexibility, and adaptability of the building to societal changes and external factors that could impact processes and workflows.