This article draws on the notion of collective memory to address the experience of urban space in antiquity. Focusing on Timgad in the Severan period as a case study, it mainly engages with the city plan and its streets, the public buildings that lined them, and their honorific inscriptions. Based on top-down and bottom-up processes, it highlights how the built landscape was staged to create a memory of the urban space and its development, but also how the inhabitants themselves were able to contribute to fostering this memory through everyday urban practices.