By 2050, two out of three people will live in cities. This increase in the population in urban areas added to the increase in tourism makes it increasingly necessary to implement sustainable measures to help build the cities of the future. The main characteristic of Smart Cities is that they are based on sustainability, technology and efficiency. Their main objective is to improve the quality of life of the inhabitants while promoting a lasting and sustainable economic-environmental development. Today we have made a list of the top 5 Smart cities in the world. Check them out!