OpenStreetMap, with its comprehensive global coverage, serves as an invaluable resource for creating high-quality visual maps and navigation services, facilitating detailed block-by-block urban analysis. Three recent research projects exemplify its potential: the University of Chicago's Million Neighborhoods project uses OpenStreetMap data to highlight accessibility challenges in informal settlements, revealing areas underserved by infrastructure; McGill University's SprawlMap analyzes street network patterns to illustrate the accelerating trend of urban sprawl globally, with implications for CO2 emissions and social isolation; and the Institute for Transportation and Development Policy's Pedestrians First initiative utilizes the data to assess walkability in cities, identifying both urban centers and informal settlements with strong pedestrian networks. These projects underscore the significance of OpenStreetMap in urban planning and highlight opportunities for improvement in data coverage, while the annual State of the Map conference offers a platform to explore these uses and contributions further.