So, the X-Seed 4000 (https://en.wikipedia.org/wiki/X-Seed_4000) is a rather large lad. The tallest building ever fully realized. Let's just say that, in five decades, they decide to actually build this thing - not on the coast of Tokyo, mind you, but somewhere a little less... active, like, in the Russian steppe or in the middle of Kansas.
According to the specs, it looks like this bad boy is going to be 4,000 meters tall and roughly cone-shaped. That means it's quite a bit of a sky-piercer and has a pretty sizable footprint.
What I'm concerned about is the weather. Not inside - after all, by this time in the future, we'll probably be able to keep it nice in cozy on the inside using our technology. I'm talking about the outside.
How exactly would this affect the weather around it? Would it cause tornadoes by blocking wind? Would it throw off the jetstreams? What sort of consequences would we need to be aware of?
(Y'know, so we could maybe make lots and lots of these and eventually replace cities. After all, if you've got 8,000 of these, you could probably house 8 billion people. So there will definitely be more than one.)