Source: http://gizmodo.com/watch-how-open-source-openstreetmap-mapped-the-globe-in-1619401706
A decade ago, OpenStreetMaps launched as a free, open-source alternative to the other mapping tools you may encounter on the internet. Turns out that the collaborative experiment worked exceptionally well, and thanks to a new site, you can see for yourself how the Wikipedia of mapping has covered the whole planet.