>>16739078 (OP)One earthquake. One thing to knock the bottom pillars down. Ita over. An entire city falls. If one floor collapses so does the one below it. Evacuations. It blocks sunlight. If one of the pillars gets bombed on the bottom, say goodnight.
Litrering. If residents accidentally or purposfully dug holes through the floor of one level to drop things on other residents.
The people are stupid enough to fall off. The sided will attract a lot of people as looking down will be an attraction. What about rain? Will it only rain on the top floor?
I'm a 115 iq and even I can poke holes in it the second I apply any ounce of critical thought.