Have been trying for some time on finding ways on how to incoorporate detailed Google earth 3D data into a gameengine project (disclaimer; using this 3D data from Google for any commercial projects is for sure not allowed.)
After several not very succesfull and cumbersome experiments using photogrammetry and renderdoc hacks on google maps I stumbled by accident onto this reverse google earth engineering project on
https://github.com/retroplasma/earth-reverse-engineering
This works like a charm! Very nice work from these guys. You still need to find the exact Octect number from Google maps that you want and you absolutely (!) need to recenter and rescale everything you download as .obj (otherwise you will look in vain for any imported objects in your blender screen or 3D editor as they are removed very afar from the origin axis). But once you have imported the data with all the textures in blender, you can then export a .GLB that imports quite easily and effortlessly into Unity (using the sketchup addon for example).
As a result, cool & (semi)realistic surroundings in your Unity project are now possible!
Tried this out quickly on a small Unity HDRP Render Cinemachine Timeline of a new building for VRT (see below).