How did Criss Angel levitate from one building to another?

He is not really levitating -It is just an illusion. He has these wires inside of his outfit and when he puts hands up it make him float and as he puts his hands down he floats down.

i heard he uses this thing that pulls him up from the sky because i watched this one episode and this thing appeared then disappeared. The "crowds" that you see, who "don't see" how he does it, are just paid assistants who can easily see how the trick is done.

The Masked Magician gives a demonstration and also how this trick is done! The series is on YouTube (Magic's Greatest Secrets Revealed). You can get to learn how a lot of tricks are done by watching the Masked Magician.