From Wikimania 2014 • London, United Kingdom

OpenStreetMap (OSM) is basically like Wikipedia, but for maps and geographical data. In past Wikimanias, there have been a few OSM-related presentations and mapping events but Wikimania 2014 will be a bit more special because London is the birthplace of OpenStreetMap and this year's Wikimania will coincide with the 10th anniversary of OSM!