The locals, residents of the city of Buenos Aires, are very hospitable and friendly spirit. They are talkative and educated people. Collaborating and solidarity. In Argentina are greeted with a kiss on the cheek. It is customary for the locals to be on the street, talking with people in Buenos Aires all its inhabitants share and seduce on the street. They are seen at the gates taking a mate and said something to the neighbor. Or cleaning or fixing something in the car. It is customary for an Argentine, meet in the homes of friends or family, is widely used to invite people to your home. A drink mate, eat a roast on the barbecue. They are widely used public spaces, plazas, parks, walks, etc.. The bars and cafes are an ongoing activity from early morning and are abirtos all day until night. The hygiene of public spaces is not always optimal. Transit in Buenos Aires is often very difficult on weekdays, from morning till late afternoon. For this it is best to move in a collective (bus) or underground (metro), although the subway rush hour will find that they are very full. There are smoke-free areas. Ban on smoking: in October 2006 was extended in all enclosed public spaces. It is considered "friendly metropolis" by the gay community, attracted by its cultural events, numerous services to this audience in particular and the general social acceptance, reinforced by legislation recognizing civil unions of same-sex couples. The University of Buenos Aires-free public-school senior is serving more than 300,000 students, many of them foreigners. It is also very broad activity of the private universities. From the architectural point of view, the city is heterogeneous. Building styles coexist according to the time and foreign influences. The architecture is what is sometimes characterized in the neighborhoods, but not all: also influence key activities, its history, its own customs, their ethnic or religious, public spaces, etc. Governmental actions and also those of the living forces of place. In the socio-economic, there is widespread middle class, although after the 90 increased the gap between rich and poor. This condition is reflected in some neighborhoods on the periphery, where the contrasts can be observed. Also, the increase in unemployment and poverty is evident at times in the existence of homeless people in the street. A large "army" of "cardboard" through the city late in the day in search of recyclable items that can be rescued from the trash bags.