"Leading lines refers to a technique of composition where the viewer of your photos attention is drawn to lines that lead to the main subject of the image.
A leading line paves an easy path for the eye to follow through different elements of a photo. Usually they start at the bottom of the frame and guide the eye upwards and inwards, from the foreground of the image to the background, typically leading toward the main subject.
When you’re setting up a shot, take a moment to examine the scene for its prominent lines. Clear your mind, relax your eyes, and notice where they are naturally drawn to."
Canon EOS 5D Mark II 1/50 second F/11.0 ISO 100 35 mm