And in general, the first 30 floors of Burj Dubai are planned to house various hotels and residential apartments, and what's above that will be for offices (they say it's cool -_-), and at the very top, there will be something very exclusive *___*.
By the way, judging by the height of the building, the pressure on the upper floors should be 70 mm Hg lower than normal atmospheric pressure. That's quite a difference for those sensitive to weather changes 0o.

За всем следят машины благодати и любви.