Tokyo Big Sight is a convention and exhibition center in Tokyo, Japan, and the largest one in the country. Its most iconic feature is the visually distinctive Conference Tower, consisting of four upside-down triangles. In a life after people, where no one comes to visit, how would this convention center fare?
1 day[]
As humans vanished while an anime convention was happening there, large amounts of the memorabilia are still on the shelves. When power outages sweep the globe, the lights shining in the center die.
50 years[]
At this point in time, most of the memorabilia is too decayed to make out, and plants have begun to grow inside the center.
375 years (The Collapse)[]
As the years passed, the center slowly returned to nature, with trees and plants growing inside it, and harboring a whole ecosystem that has not quite adapted to life inside the building. However, as an earthquake strikes Tokyo, it all comes crashing down. As one support falls, the others do the same, with the Conference Tower falling to the floor and shattering on impact.