How did he get up on the Burj Khalifa?

Once upon a time I went to the Burj Khalifa,and I had binoculars and I saw something amazing it was a person on the worlds tallest building the Burj Khalifa, well it is nearly the tallest thing ever counting mt Everest,so I saw this crazy person on it the thing is there is no lift not even stairs but if there were stairs it could change its name to stair way to heaven so I,guess he must of climbed it like the people on youtube.

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