SlussenProject is an extensive audio database of stories, memories and field recordings characterizing the Slussen area in Stockholm and in particular its unknown and invisible dimensions. The realization of the project has been maintained over six months between December 2012 and May 2013, when the process of demolishing was planned to begin. The collection of sounds is manifested through a multitude of means such as interviews, field recording and on-site interventions. The final outcome - a methodologically developed sound archive - will be eventually brought back into the new layout in an unobtrusive manner such as in-situ placement of Augmented Reality tags . Thus, the passers-by within the new architectural arrangement will be given an opportunity to confront the long-gone spirit of its predecessor. A few main research questions were formulated at the initial stage of shaping the project: Can the realm of sound offer a space for transmitting memories across time? Can sound - perceived as a time-based phenomenon - become a medium contributing to the redefinition of traditional forms of archiving and commemorating? To what extent does the use of locative media and the very placement of archival material in the public space augment its perception and experiencing?