Architect Donald Macdonald designed the Golden Gate Bridge's current tollbooths and bike rail, set the guidelines for it's retrofit, and is at the centre of the discussion around the subject of the proposed suicide barrier design. Through his eyes the balance of aesthetics, geometry, and engineering that fashion the bridge is made clear. His friendly, accessible text and truly charming hand-drawn illustrations make it easy for readers to dig into nitty-gritty architectural and technical details of why the bridge was built the way it was and how it became an icon.