Urban Planning is a National Project that reduces the cost of building new cities by $50,000,000 per city. It requires 11 cities to build.
To build this project you need 10,000 Coal 
, 10,000 Oil 
, 20,000 Aluminum 
, 10,000 Munitions 
, 10,000 Gasoline 
and 1,000,000 Food 
.