The technologies of the smart city and the practices of governance they instruct lead to the design and construction of more and more specialized spaces for data-visualization for town planners. These often feature hyperreal models of the city (i.e., urban digital-twin) on which multiple layers of spatialized data are presented. However, little attention is given to the impact of the assumptions and ideologies embedded within the architecture and technologies that are used in such immersive interfaces of data-visualization. The growing critique in research on the bias of data and technology at large and particularly within the burgeoning field of the smart city, strengthen the need for such intervention. Bringing together knowledge from performance-making of immersive theatre and urban sociology, this project offers an investigation of the kye workings and effects of a visualiztion theatre for town planning, decision making, and audience participation.