¿Doom map?

I was in a seminar in the Sumitomo building in Shinjuku the other day and after a while I realized that the building had a pretty interesting structure. I could easily walk around and always come back to the initial position very easily, I though that was smart and I felt like being inside a first-person shooter video-game.

I fact, when I found a map of my floor this is how it looked like! It reminds me Doom, Quake or Unreal series maps so much!

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