Incredible image. I love how it seems the people and the shadows are changing places, you can think that the shadows are the ones walking, and the people are their shadows, it's a play with the perspective, it makes this picture brilliant. The pattern on the ground (or wall, it depends on your point of view ) has a great job here, giving a texture to the picture and making you think if it's a true photograph, or a pencil drawing. It plays with the senses in so many ways you can not stop staring at it. Great work there!!