Space syntax is an important knowledge domain and focus of study for students of Architecture. It centers on the understanding of spaces, tectonics and volumes for the informed design of buildings or outdoor spaces. Space syntax is considered to be a threshold concept in Architecture, in that understanding and interpreting this knowledge domain is something that the learner needs to acquire in order to progress as a professional in this field. The concept of “line of sight” is a specific example of a concept in the space syntax domain. This research investigates a case of systems design of an immersive virtual learning environment to support teaching a concept of space syntax to students of Architecture. Such environments can engage, immerse and guide learners in ways not yet undertaken and may find application in workplace learning. This research explores the systems design requirements through a demonstrator that is tested by a small pilot group. One case scenario to teach the concept of “line of sight” was selected for the target design. Based on the expert feedback we designed a learning module demonstrated at the University College London CAVE-hybrid facility. The demonstrator was trialed in 16 timed trials. Several conclusions for workplace learning on the systems design choices are drawn.