Cities are the habitat of the knowledge-based economy. Cities produce and attract human capital and are today giant interface of communication, cities possess the critical mass for production and diffusion of knowledge, innovation and integration of human networks, which enable sustainable growth. At the same time cities are the true heart of innovation. The aim of this paper is to create architectural interventions on these new cities for the creation of spaces that all human beings can felt comfortable as they are inside old cities and with modern and sustainable fields. This kind of new cities concept has to have more than only architecture buildings and beautiful construction. They have to produce concepts of community for inhabitants and not only a network with technologies. So this is the “bad” part inside this type of new ubiquities cities. All the data from these spaces have to be incorporated inside an Open Community Data, where the citizens participate actively on decisions, and empowering citizens in a construction of a participatory e-society. A city is not only a walkable place according to Jeff Speck:” …the author of “Walkable City: How Downtown Can Save America, One Step At A Time…a walk has to be useful, safe, comfortable, and interesting if you’re going to get people out of their cars and into the sidewalks”. The architecture that we have inside a city produces feelings and sensations to inhabitants. A city is not an object as a simple “fridge”. The focus is on public spaces and on common areas inside buildings, how they connect with each other it is an objective and the technologies that we use, we apply, we see and we find are points that we can’t forget. The aim of this research is to determine some architectural concepts that will help cities, but especially planners and architects, their role, their tools and their strategies. The paper argues the future sustainability of spaces maintenance and their strategic plan applied on these New Smart Cities. Smart cities will produce outcomes on the techno-economic scenario analysis and on the socio-economic impacts.