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There's a torii at the airport?
If you've been studying Japanese for any length of time at all, you should know what a torii is. If not - it's a (usually) red gate, generally made (usually) of wood, placed at the entrances to places that have spiritual energy of some kind. Shinto shrines are usually placed nearby.
That was here before the airport was built.
If we try to take it down, someone gets hurt or killed. So we left it where it is.
Isn't that just superstition?