[Muromec]

My most favorite fact about Strandeiland is how it looks on google maps plan view. Apparently google already extracted streets from the satellite imagery, but didn’t yet updated the shape of island itself. So you see streets on IJ surface. https://goo.gl/maps/wrL42MHhBvPf1Ben9

Oh and of course in this country cycling paths are built before any houses.

[krab]

Some countries export streets, addresses and buildings in a machine readable format. So it could be based on a periodic import, not on image recognition.