This paper was presented at the IFLA Pre-Conference satellite at Turin, Italy on 19 Aug 2009 by Damien Wang. The ‘UnLibrary’ was a social experiment by the National Library Board (NLB), Singapore, to prototype a participatory ‘library within a library’. Envisioned by an iconic theatrical personality, shaped by a team of volunteers, and evolved by library users through interactive exhibits and programmes which function as ‘conversations’ between the library and its community, this ‘library takeover’ project went beyond the manipulation of the ‘UnLibrary’ space, as it also involves the manipulation of everyone’s ideas and feedback into user theatre improvisations which were performed during the ‘UnLibrary Weekend’. In all, the UnLibrary installations received a total of 26,742 visitors from 1 Apr to 18 May 2009.