Within the frame of temporary events, having recourse to the model of the tent corresponds to usual experiences. When the model offers advantages of fast assembly and certain flexibility, it has some significant disadvantages at the same time, especially regarding comfort (thermal and acoustic) and sustainability. Additionally, the transports induced and the materials used aren’t subject to special verifications, especially regarding the necessary energy and the influences on the environment. In this context, the present article explains in detail the objectives of this project “ON STAGE”, which consists of developing an alternative to the current practice, by showing the same advantages of the tent, but by offering an increase in term of sustainability. Not only verified on architectural, constructive and technical basis, but also regarding regulations and efficiency, the feasibility of the model this research is about will allow the arrangement of reliable bases for the next realisation of the infrastructure, which will have the importance of an applicable prototype. From the point of view of an increased sustainability, the project aims particularly at obtaining the following matters: quality of architectural expression, flexibility of the infrastructure, response to acoustic requirements, optimisation of the thermal comfort by bioclimatic principles, ideal utilisation of renewable resources and efficient utilisation of the infrastructure.