Timelines are by nature visual, but that doesn't always make them so visually inviting. I did this one a while ago for practice and to learn a little about a Bay Area landmark, too. Even from a distance, you can clearly see it is about the Golden Gate Bridge, it's foggy, and there's a blimp in the sky. A successful visual creates a very simple, yet clear, first impression like that.
This timeline was created on a 4'x8' sheet of paper and colored with crayons...which I quickly discovered are hard to photograph well. So, this one remains a cropped snapshot, not a bright and shiny digital image like I usually send my clients.