The Compact of Mayors is a global initiative to reduce cities' greenhouse gas emissions. Intended for mayors and city officials around the world, I designed a seven module online course on how to become compliant with the Compact of Mayors. In order to visually reflect the course's epic goal of empowering city leaders to make a difference in the climate trajectory of their city, my team designed each module to take place in a specific part of a virtual city. As the learner progresses through the course, the city becomes visibly improved; each module's location becoming more vibrant while trees, flowers, and wildlife begin to appear. The visibly improving virtual city, displayed at the beginning and end of each module, provides a subtle reminder to learners that their efforts to complete each module reflect a much larger local effort to improve real cities on a global scale.