Bangkok itself is basically one immense mall or market. It is a dense urban area, and people are used to being together rather than at home alone. Almost the entire city is a combined residential and private zone. In older sections, main streets are lined with shops, many of which are also homes. There are smaller, moveable shops and carts on nearly every street. This pattern repeats on the grounds of malls, and often inside them. At night, many bazaars and night markets appear and then later disappear. Malls are an extension and modernization of this way of life.