The tricks done by Criss Angel on the show "Mind freak", are they real? and if so how are they done?

I have watch this guy on this show walk down the side of a building wiht no wires, no nothing, just walk down like he was walking down a street, walk through a gl, disappear from under a can i front of people and reappear 2 storys above the crow, how people think of a picture and then draw it out and be right, if you watch this show you know what i mean. i know its tricks but i have to know if its real and if its fake how the hell is it done??