Objects testify is a community-engaged program of knowledge-sharing, research and action for First Nations researchers and organisations initiated by Joel Sherwood Spring. The program originates from asking what if an analysis of Architecture and Urbanism began with what and who is disappeared in the process? Modelled as exhibition-as-research, Objects testify considers the material histories of place and the colonial apparatus that protect and perpetuate architectures of violence in Australia. Over eight weeks in UTS Gallery, Objects testify will host both closed and public conversations and actions between First Nations community, legal scholars, artists, architects, and researchers shaped by material ‘acts’. From shared knowledges of the lifestyles and foodways of coastal communities in NSW, to examinations of the garrison origins of property ownership in Australia, and the role of spatial and material evidence in law, each act will leave a material trace in the gallery, building towards public forums in the final weeks of the program.