Urban culture is the culture of towns and cities. The defining theme is the presence of a great number of very different people in a very limited space - most of them are strangers to each other but still try to be polite to each other more times than not. This makes it possible to build up a vast array of subcultures close to each other, exposed to each other's influence, but without necessarily intruding into people's private lives. Urban Areas(Main article: Urban area)