https://blendermarket.com/products/citigen

Citigen is a Blender add-on. No need for HDRIs, no need for rigging animation cameras for simple drone shots like POI or Course Lock!   With a few clicks, you can create a limitless variety of city environments equipped with streets, traffic lights, trees, and etc--as huge as your RAMs, CPUs, and GPUs allow. The default city props that ship with Citigen will look like a real thing from 10 to 15 feet a way, good enough for drone-shot-like scenarios, but you can add your own detailed building models to the Citigen library for close-up shots!