This article explores the sense of proprioception within visual mental imagery. The research is based on an experiment named In/Pe (Intention/Perception) developed by the author. The analysis of the data investigates the perception by an audience of architectural spaces, as well as natural environments, in visual mental imageries, emerging from a focused listening process of three fixed-medium pieces, one sound installation and one performance. This highlights the idea of the experience of the artwork as a virtual constructed perception within one’s mind, an embodied experience that triggers the phenomenal world of sensation. The study examines what kind of spaces are visualised by the ‘beholder’. The overall agreement in how participants imagine spaces suggests that the perception is linked to their own bodies.