In many cities, wealth seems to be divided quite vividly into two parts. Travel west and the streets may become greener, the homes larger, and property prices higher. But head east, and historically working-class or industrial neighborhoods often appear.
The pattern is especially noticeable in older European cities, and it has sometimes survived long after the factories responsible for it disappeared. One surprising explanation for this class divide is the wind. But there is a lot more to it than that.
Intrigued? Click on to see why this divide seems to exist.