Historic urban landscapes (HULs) are composed of layers of imbedded tangible and intangible features such as cultural memories. As the collective memories of city inhabitants, cultural memories can affect elements of social sustainability such as health, well-being, community identity, place perception and social engagement. Utilising the popular Zanqit Alsitat (also known as ‘Zanket el-Setat’ or ‘Zane’t El-Settat’), the only remaining historical street market in Alexandria, Northern Egypt, this research proposes a theoretical model for recalling and continuity of cultural memory features in HULs, which can be used to achieve social sustainability. The research explored the site by applying a qualitative methodological approach through semi-structured in-person interviews in the study site, along with analysis of comments obtained from a research-purposed social media (Facebook) group. A qualitative data management software (NVivo12 programme) was utilised for interpretation and charting the features of stored cultural memories relating to this place. The study indicates that educing and maintaining the features of cultural memory in HULs contributes to social sustainability through its influence on the formation of place identity, sense of place, civic pride and quality of life. This framework for social sustainability in HULs can be applied by engaging social groups through participatory planning.