What are we speaking of when we refer to “landscape”? This article aims to answer this epistemological question. To this end, the author examines the day-to-day work of architects, urban planners and landscape artists whose jobs are to produce spatial forms. The hermeneutic analysis of material gathered via participant observation at an urban planning show suggests an aesthetics which is attentive to states of emergence, conscious of the environment and anxious to connect human and non-human elements. It is a sensitive practice, which may suggest the outlines of new ethics of expertise, both collective and dialogical.