Through the years we have worked with  the idea of gestalt through artefact creation (including virtual objects and 3D-worlds) as one surface to explore, exploit, test and communicate our ideas and concepts, that are generative rather than produced, where we try  to grasp systematic insights through complex generated realities, in which an audience later is invited to interact.  In our Ideal spaces exhibition for the 2016 Biennale in Venice, we tried to explore this via a combination of presenting ideal city spaces, active participation of the visitors molding their own spaces, and symbolic representation. Ideal Spaces is also a high-tech project that uses diverse technologies in new ways, also new techniques and programming developed by us. In this paper, we show the theoretical and cultural background, and some lessons learned, regarding on what level of abstraction a visitor could interact with our exhibition to better understand how visitors created their own ideal spaces.