Explore how Tucson’s recognition as Municipality of the Year highlights the transformative power of circular economy principles. Delve into the city’s Los Reales Sustainability Campus as a case study, illustrating innovative waste management and community engagement strategies that drive both environmental and economic benefits. Reflect on the collaborative efforts across city departments and the pivotal role of local leadership in achieving these sustainability goals. Discuss challenges faced and lessons learned, providing insights for other municipalities aiming to adopt similar initiatives. Conclude by examining the future trajectory of Tucson’s sustainability journey and its potential impact on broader urban planning efforts.