The most common methods use a combination of a "capture" tool and a 3D modeling platform like Blender. I Pulled a City Out of Google Earth in 3D — Here's How
Extracting 3D models from Google Maps is a specialized process that involves "grabbing" the photogrammetry data used to render cities and terrain. While Google does not provide a direct "download" button for these models, several third-party tools and workflows allow you to capture this data for personal, educational, or research use. Popular Google Map 3D Grabber Tools google map 3d grabber download