As a daily life in Taipei city, the old apartment building is a representative memory carrier. With the different needs of users and the rapid change of additional structures in the time axis, contradictions arise and occupy the roof space that should be for public use. We transform their state of mind from just entering the city, generating memories, contradictions and spatial dialogues into an experiential space, helping them to find their own urban symbols in Taipei and to find their own memory construction and belonging to the city.