The Nakagin Capsule Tower is probably what many people envision when they think of modern Tokyo: a sort of space-age but utilitarian building stacked high into the sky. In truth, this building is the one and only of its kind in Tokyo or anywhere else, and unless you consider 1972 the peak of modern Japan, it’s actually quite old. Only a handful of the capsules are currently inhabitable and a plan to renovate the building fell into limbo when the original architect Kisho Kurokawa passed away in 2007. The future of the building is unknown but you can see it from the street or raised walkway near Shiodome station in Tokyo.