Iranian artist Nazgol Ansarinia was helping her parents move house in Tehran when she first became aware of the physical materiality of traces, those ghostly imprints of where furniture once stood and outlines where pictures once hung. Realising thst even empty space carries the marks of history, she embarked on a journey for which her video installation Living Room (2005) was the starting point. What has followed is a sustained engagament not just with buildings, but with an entire set of social and economic phenomena. For Ansarinia, these exist in a systematic relationship with architecture, as Arie Amaya-Akkermans learns.