In the past we have talked about ways to capture our viewer's attention and imagination in our photographs. We've talked about compositional rules, focus effects and exposure techniques. One thing we haven't talked about is "leading lines". If your goal is to draw our viewer into your image, there's no better way to do it than by providing them a path to follow.
A "leading line" is just that. It is line that leads the viewer's eye from one point in the photograph to another. The age old classic is railroad tracks. Sure, it's a bit cliche but it's a perfect example of the concept...