As "smart cities" becomes a hot topic, governments and private sectors are investing heavily in technologies such as Internet of Things (IoT), artificial intelligence (AI), and big data analytics to transform urban environments. The idea is to create cities that are more efficient, sustainable, and responsive to citizen's needs. In Portuguese, "cidades inteligentes" is the term used to describe these intelligent urban spaces. The concept of "cidades inteligentes" is gaining traction in Portugal, with cities like Lisbon, Porto, and Braga leading the way in adopting smart city technologies. One of the key benefits of "cidades inteligentes" is improved urban mobility. IoT sensors and big data analytics can be used to monitor traffic patterns in real-time and adjust traffic lights accordingly, easing congestion and reducing commute times. Smart parking systems can also help drivers find available parking spots more easily, saving time and reducing stress. Another benefit is improved energy efficiency. Smart grids and energy management systems can monitor energy consumption and automatically adjust energy usage to optimize efficiency and reduce costs. This also helps to reduce overall carbon emissions, making the city more environmentally sustainable. Finally, "cidades inteligentes" can also improve citizen engagement. Mobile apps and online platforms can be used to gather feedback from citizens, enabling planners to create more responsive and citizen-centric urban environments. This means that citizens have a greater say in how their city is designed and managed. Overall, "cidades inteligentes" represent a major shift in how urban environments are managed and designed, with significant benefits for citizens, businesses, and the environment. As more cities embrace smart city technologies, we can expect to see further innovation and progress in this area.