My research explores the notion of ‘shared space’ as applied to the ethno-nationally divided cities of Nicosia, Cyprus, and Belfast, Northern Ireland. In particular, the research questions: how can architecture and urban planning be used to promote shared space in Nicosia and Belfast? The research utilises a comparative case study strategy. Two case studies within each city have been chosen to facilitate the exploration of shared spaces of different scales and in different contexts, and to incorporate the different disciplines of architecture and planning. The case study analyses draw on multiple research strategies including: semi-structured interviews, site analyses, and systematic observation. This research will facilitate the formulation of recommendations for architects and planners striving to create shared space in divided cities.