Model have only quad polygons. No need smooth. No poles with more than 4 edges. Create in NON real-world scale, millimeters unit system. Aproximate size of city: 2500 x 2500 x h 710 mm. All objects and materials have suitable names. Object are contained in a separate layer 'Square City'. Scene have 1 PNG texture 4096x4096.
For envoronment used 1 Dome Light and 1 Target Direct Light.