Line in art maintains the basic form of a shape and can be actual, implied, vertical or horizontal. In "Starry Night," van Gogh uses actual lines in the swirling shapes of the stars seen in the sky. The lines are horizontal and act as directional movement indicators, leading the viewer's gaze across the top of the composition. These lines are the focal point, or center of interest, in the entire piece, and are the first thing most viewers see when looking at "Starry Night."