Bringing together a team of international scholars, this transnational study sees contested memorial spaces as windows for us to explore how borders are created, moved and altered in everyday life. From the Asan Bay Overlook Memorial Wall in Guam and the Puppet Emperor Palace in China to Japan's Ainu Museum and the Cowra War Cemetery in Australia, the diverse range of case studies examined here foreground the complex relationship Japan and its neighbours have with their imperial past and reveal how these relations stand at the intersection of individual actions, societal choices and memory collectives.