We are Helen and Diana, we have been working together as urban (col)laboratory since 2005. Our different backgrounds in practice: Architecture / critical writing and Performance / media art, and cultural contexts - UK and Germany inform each other to realise projects that combine live art, performance and architecture. We met each other in 2004 at Akademie Solitude, Stuttgart, Germany. After a night-long discussion about the performativity of architecture and urban spaces we started an ongoing email exchange. The outcome of this interdisciplinary collaboration is a series of papers, site specific performances and videos that investigate the rhythms and routines by which people negotiate, define and produce everyday spaces.