The futuristic-looking Nakagin Capsule Tower in Tokyo will be demolished next month, its owners say, after a long battle to save the building and its space-age units. The tower, completed in 1972 and designed by renowned architect Kisho Kurokawa, is a landmark of the Metabolism movement, which aimed to create sustainable living spaces that people could take with them if they moved. Its dozens of capsules with large round windows were designed to be individually removed and replaced, but have instead remained there in an increasing state of disrepair. The owners plan to extract some of the whit…