To advance the theme of communicating spaces we report on a case study of a market precinct known as the Barras, about one mile from the centre of the city of Glasgow and relate this to our investigation into intelligent environments. In the latter case we deploy Lego MindstormsTM RCX robot processing to explore interactions between a mobile sensing robot and simple environmental controls: movements of sliding screens in response to an autonomous mobile sensor. We speculate on the application of these techniques to augment physical marketplaces. We extend the lessons from these studies to a consideration of multiple modalities in sensory experience, multi-agent systems, and the use of sound, the human voice and repetition for defining and augmenting spaces.