This Google A.I. Can Figure Out Where Almost Any Photo Was Taken - Forbes
"the team divided the globe into about 26,000 squares of differing sizes based on how many photos from the data set were taken in the area.
PlaNet is able to localize 3.6% of the images at street-level accuracy and 10.1% at city-level accuracy. 28.4% of the photos are correctly localized at country level and 48.0% at continent level,”