Walking Through a Wall: Anatomy of Illusion
As we all know walking through a wall is just impossible, but don’t you think it is possible to walk beneath it? So that’s what they do. Wait really? Let’s dig further. Magicians already have a tunnel connecting both sides of the wall. So when he tried to go through the wall he was going into that tunnel and then appearing from another side. As usual, sheets act as a deviation to deceive you.

Random Houdini Fact: On one Halloween night of 1926, a very popular magician and escapist died. He was delivering a lecture to his students. He mentioned that he can survive and can endure any smack delivered to his stomach and to check whether this saying is true or not some random idiotic guy from the audience smacked him in the abdomen. After some days he died of peritonitis.