This is the author accepted manuscript. The final version is available from SAGE Publications via the DOI in this record.Smart urbanism is a currently popular and widespread way of conceptualising the future city. At the same time, the smart city is critiqued by several scholars as difficult to define, and as being almost invisible to the naked eye. The paper explores two urban spaces through which the smart city is rendered visible, in two UK cities that are prominent sites for smart urban experimentation and development. Bristol’s Data Dome, and Glasgow’s Operations Centre are analysed in light of their iconic nature. The paper develops a conceptual understanding of these flagship spaces of the actually existing smart cities through three...