The cities are green spaces or gray or brown ... full of life, laughter, horns ... or death and life, two sides of a coin.
They usually grow on the edge of a river, which then succumbs and is devoured by people who forget why the river is there.
Each continent has a notion of space to coexist. And within them there are big differences.
The future is one of those cities that are willing to be greener, more self-sustaining and humane. With more spaces for recreation, culture and leisure. With more sport, walking and less cars.