This chapter provides a short synopsis of the ghost estate issue, detailing the factors that contributed to the phenomenon. It describes the way in which the estates have been invoked as symbolic spaces within the national narrative of collapse, and the State's response in the form of the National Assets Management Agency (NAMA). The presence of ghost estates in the Irish landscape exemplifies the problems associated with the Celtic Tiger property boom. From the early 1990s, Ireland experienced a significant transformation of its demographic profile, coupling natural population growth with a reversal in migration trends. As a result of the property and banking crises, these estates went from being half-built in the sense that they were not yet completed to being half-built in the sense that they would never be completed.