This chapter explores how contemporary art can reintegrate nuclear knowledge into society by transforming repositories of radioactive waste into living archives. It argues that utilising contemporary art as a means of archiving and engaging with the past provides a powerful tool for involving individuals in shaping a shared future. The chapter examines different countries’ approaches to nuclear semiotics, with a focus on Italy’s ongoing search for a permanent disposal site. It analyses the Art Spaces. Nuclear Decommissioning. Science at the service of the future generation exhibition held in Italy in 2017 as an example of artistic engagement with radioactive waste, drawing from interviews with participating artists. The chapter delves into the complexities of the Italian nuclear landscape, explores strategies for sharing Italy’s nuclear legacy, and emphasises the capacity of contemporary art to stimulate dialogue and involvement. By investigating international influences, the chapter offers insights into effectively using contemporary art as a catalyst for discussing collective legacies and understanding Italy’s nuclear repositories.