#30daymapchallenge Day 17 (collaboration): OpenStreetMap Nodes of Leipzig Zentrum, coloured by user who edited them most recently. The way I see it, every map using OSM-Data is collaborative, but it's hard to show just how much of a collaboration it is. As of March 2025 there are 452 different users who last edited a node in this area, disregarding ways and relations. Colours were chosen at random by QGIS.