Sideways on the Great Wall of China
Everyone has seen millions of pictures of the Great Wall of China. But, no one must have seen a picture like this where the man is walking on the wall itself! What a brilliant feat. Clearly, gravity does not work on him.
But, if you look closely, the photo is tilted in a way that it looks like this. He is actually holding on to his body weight on just one arm. A pretty scary way of taking a photo. Not to mention the strength that this photo needs!