Nürnberg or Nuremberg is a small sized city in the state of Bavaria in Germany. It has an area in center of city called the old town that’s surrounded by city walls. The city walls were built and date back to Medieval times, when the kings needed protection from attacks. The city itself sits on Pegnitz river. Nuremberg is infamous for the Nuremberg Trials; however there are some other neat things to learn about the city. One is its transportation system.