The American's 1-miles grid is the starting point of the sprawl the circle's project, it is everywhere, a very flexible system to urbanize the flat land; sprawl is his fate, it destroy every kind of hierarchy, delete all the references and convert all the land in a sort of pretty streets design.
The concept is to fill the 1mile grid with another smaller one, using with care the power of the curved line like Broadway to polarize other form of dwelling like natural park could be.
The circle will give to us the chance to do so, they will free the land step by step and finally will offer to us big portion of ground that can be used for everything: for rise, for farm, for envairomentally correct form of energy production, you can also imagine to create a big lake inside one of these, or if you prefer you could let it free and whait to see what it wants to host.
The land's lack will create an higher density in the other portion of city, we suggest the place to do so with architectural interesting items able to take commercial spaces and services connected to the circle activity.
The system is just been fitted, now whait and let it grow.