CityMe significantly contributes to urban sustainability by promoting the decongestion of highly crowded urban areas, using mobile technology as a vehicle, encouraging micro-mobility, and demystifying the most tourist-visited areas. Through its app, users have the company of a local AI guide and access to all the necessary urban tourism content via AI audio, enabling them to explore the city at their own pace, without needing to join tourist groups or tourist buses that generate crowds and require specific schedules, reservations, and group sizes. This approach helps reduce urban tourist congestion and the pollution caused by tourist coaches.