This can be spiritual and not just over a real city.
I have created a new city for the worldwide ecclesia.
I sense initially the cities are spiritual first
I see if the body can work in enough unity and link with apostolic resource centres so benches in various domains can link together over a city. This becomes a city of refuge where so much legislative work has been done that everything flows on earth and becomes more like heaven. Then the boundaries between heaven and earth reduce, so eventually there will be a new earth.
CITY OF REFUGE
I am seeing this now as not a city we create on earth physically or even press in for spiritually dealing with principalities , nor a place when disaster strikes the earth we build nor benches of seven over different domains
but we build and take ownership of our own city in new Jerusalem and this then leads to a new earth forming. We descend as the new Jerusalem hovering over the earth but eventually dock where our frequency takes residence without conscious thought .