Deutsche Bahn (German Railways), one of the world-leading passenger and logistics company is long-known to be very closed and conservative. Therefore, for many it was a complete surprize when Deutsche Bahn has announced the DB Open Data Portal in Novemeber 2015 and started publishing datasets under very permissive Creative Commons licenses. These datasets include geodata like stops, stations, complete railway track network and many others, growing almost weekly. DB Open Data is now extended by DB Open APIs like timetable of the long-distance trains. In this talk, we tell the story behind DB Open Data. About our challenges and failures, our successes and lessons learned on the way to become more open, to enable and to be enabled by the community. We show projects which were already implemented using our Open Data and point out to boundaries we still have to break.