Tokyo University graduate student Takatsugu Kuriyama built an accurate three-dimensional model of Tokyo’s incredibly complex subway system “using multi-colored tubes strung with wire. Different color liquids pulsate throughout all 18 lines, creating a staggering picture of what goes on below the streets of Tokyo every day.”
Looking at this diagram, I realized that I visualize subway systems (like Tokyo’s, New York’s or London’s) operating on a single plane. Flat. But Tokyo’s, at least, is tall as well as broad. It’s like an anthill or termite’s nest.