We got this freaky crumpled map as a gift to bring on our upcoming trip to Rome. It’s made with OpenStreetMap data.
I wonder if they used any additional data and if so, did the publishers follow the directives of the CC-BY-SA license of the OpenStreetMap data? I see things appear on my crumpled map that are not currently in OpenStreetMap. An example is Parco Savello:
If they did use other sources together with OpenStreetMap to make these maps, the
resulting database derived work should also be licensed under CC-BY-SA. Does anyone know if that is the case?