Before Street View and PhotoSpheres and Local Guides programs with millions of user-submitted photos, there was Panoramio. The site launched in 2005 as a way for users to share geotagged photos around the world and was later acquired by Google in 2007. Its Google Earth and Maps layers boast nearly 100 million user-contributed images, with many locations around the globe offering more pictures than what's available from Maps user submissions.
However, back in 2014, Google had decided to shut down Panoramio and fold it into Maps. That decision was met with some push back from the community, and thus resulted in the delay of the final doom and Google working to implement more social features and contributions in Google Maps to make the Panoramio shutdown more tolerable.Read More