We like to imagine Japan as a clean and technologically savvy society. Yet, little known to the outside world is a burgeoning subculture of visiting abandoned factories, mines, theme parks, and resorts that have been left behind by Japan’s bubble economy or the so-called “Lost Decade” of the 1990s. How do we make sense of this “haikyo mania” (ruin mania) practiced by Japanese ruins aficionados? My book chapter, “Japan Lost and