Cycling in a city can be stressful, especially if you’re headed somewhere that you’ve never been to before. Most people ride with a specialized cycle computer, or with a smartphone strapped to their handlebars. While useful, both devices can be a distraction on busy, dangerous roads. Instructive turn-by-turn directions also do little to improve your street-level knowledge — the screen becomes a crutch, rather than a tool to help you learn about the various roads, bridges and tunnels around you.