Diagonal and vertical lines. The diagonal line is the main focus of the image, it gives a sense of excitement and energy, shows direction. Vertical lines on the side give height to the wall, gives a business-like and masculine feel.
I think the pattern from the layer of shadows contributed to making this an artistic shot. I do feel that the repetition has created some movement for the viewer's eye, guiding it through the image. I also found it interesting why the photographer chose to do a side view instead of a front, perhaps so you can see the shadows of the patterns clearer.