How would you design the city of the future?

If I were to be an administrator, my city would be the greenest in the world. I would put pockets of forests in hubs, and every house would be encouraged to have a garden and at least two fruit trees.
There would be a more expansive Park, right in the middle of town. The Park excludes all manner of vehicles. For every concrete building, a corresponding tree would be planted. There would be water fountains and waterfalls in the city forests.
Keeping my city green would be my main agenda, hence, the original design and everything else would be embedded in the project.
