The U Bahn is Nuremberg's mass transit system. It is very easy to navigate, at least coming from DC, with only 3 different lines. Getting on the U Bahn from the airport to the city center is the cheapest and easiest way to get around. One cool feature of the U Bahn is that it is completely driverless, which is how the systems in America should be. This ensures that the system is punctual and makes for a much smoother ride. The system is the newest in Germany, and you can tell with how efficient an clean the system is.