Humans have overlaid information on maps for centuries, from the best army battalion positions to the best pubs in the city. Nowadays, those maps are usually digital and web-based, displaying everything from weather information to virus hotspots to, well, the city's best pubs. Today, we'll explore how you can quickly build a map with useful overlay data using Wijmo, GrapeCity’s dynamic set of 100+ JavaScript UI components, and its bubble map feature.