In the city of Tokyo, a building stands as an anachronism in relation to the surrounding urban landscape. The building in question is the Nakagin Capsule Tower designed by Kisho Kurokawa (1934 – 2007), one of the founders of an influential architectural movement in the 1960s called Metabolism. The movement’s aim was to formulate flexible designs that facilitate continual growth and renewal of architecture. As the first capsule apartment in history constructed for everyday use, the Nakagin Capsule Tower is considered the most ambitious attempt in implementing the principles of Metabolism. Kurokawa attached the building with 140 removable capsules to promote modifications to the structure over time, theoretically improving its capacity to adjust to the rapidly changing conditions of the post-industrial society. When the building first opened in March of 1972, it was advertised in the media to signal “the dawn of the capsule age.” At the time, Kurokawa had additional capsule projects planned in the coming years and predicted the mass production of these living units. This prototype for a new lifestyle for the 21st Century ultimately proved to be an exception rather than the rule. This type of capsule tower in fact became the last completed in the world. Furthermore, the building has never undergone the process of regeneration during the 40 years of existence. None of the original capsules have ever been replaced, even though Kurokawa intended them to sustain a lifespan of only 25 years. As the capsules accumulate patina on their shells through the passage of time, they exist as a poignant reminder of a future imagined to be possible at that moment in Japan as well as a path ultimately not taken.