Web maps have come a long way. A ubiquitous and critical component of many apps, they’ve also become one of the mobile space’s most successful transplants. The core web map UI paradigm itself—a continuous, pannable, zoomable surface—has even spread beyond mapping to interfaces everywhere. Yet nearly five years since Paul Smith’s landmark article, “Take Control of Your Maps,” web maps are still a blind spot for most web designers. It’s time to integrate maps into our designs in powerful, creative, progressively enhanced new ways. Young Hahn starts us on the journey to map mastery.