The present text serves as a vision document helping start a broad-based reflection in Sweden and elsewhere on how to aid future generations maintain or regain awareness of some of the most relevant environmental legacies that they will inherit – notably nuclear waste. The document will provide a basis for discussion at a workshop being planned in Stockholm, 21-23 May 2019 on understanding and improving practices for preserving information and memory of projects that may entail long-term legacies for land use and the future human environment.