Tokyo’s subway system is arguably one of the most complex in the world. The map itself can be an immediate turn-off for any unfamiliarized straphangar. But exactly how do all these lines run underground, overlapping as they carry hundreds of thousands of passengers each day?
Tokyo University graduate student Takatsugu Kuriyama decided to answer that question be recreating an accurate three-dimensional model of Tokyo’s lifeline by 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.