CITIES START HAVING HEALTH PROBLEMS. People are searching for a vast improvement, a new quality of life. The transformations into cities one hundred years ago to our cities today it is possible to identify fully. Cities consume 75% of worldwide energy production and generate 80% of Co2 emissions. Nowadays, vast and small districts are proposing new cities model because of two things: firstly the existent cities are polluted, and creating health problems for inhabitants and secondly, the new cities that were built don’t have a history or neither a collective memory. One of the not – objective under the investigation was, to do not transform the analysis into a general ‘mathematical concept’ where all the cities can become smart cities, only because, there was a simple introduction of concepts. This research it will not possible give emphasis to a statement like this. A smart city is a space where the combination of new technologies and intelligent actions in urban spaces are incorporated into new areas or old areas. Cities like Masdar, like Songdo or even like Chandigarh in India are direct examples. However, the interventions must be differentiated between the type 1, from the scratch, and the type 2 the old cities with all their history. Many world organizations have for many years been researching and developing projects aimed at improving cities and people’s quality of life. Different types of building certifications have been created around the world. American certifications such as LEED or even others are important to these new smart cities by following more closely the transformation or maintenance of the building. Over the years, several Rankings have already been evaluated, and are part of the current development or cities improvement. The concept and development of Green Buildings have improved and introduced new trends in people’s lives. Life and cities are constantly changing, and the same is true of the Smart Cities.
