Foursquare is a location-based social network (LBSN) that can be used to explore locations and mark one's movements in the form of ‘check-ins'. This paper investigates why some Foursquare users are choosing to record their locational past, and in so doing using it as a ‘mediated memory object' (Dijck, 2009). The paper explores the different ways users then interact with their preserved spatial pasts, owing to Foursquare's mode of preservation. A close engagement with phenomenological theory on the importance of engagement with technology and technicity as a shaping force on the experience of time conceptualises the use of Foursquare as a memory object. The functionality of Foursquare is positioned as a key element in how the location-based social network is significantly different from older memory related practices, as well as signalling its importance for the individuals that employ Foursquare in this manner.