Berlin Torun Bahn. One of germany's sixteen constituent states, berlin is surrounded by the state of brandenburg and contiguous with potsdam, brandenburg's. To travel by train from casablanca in morocco to toruń in poland, the main route leads via spain, france and germany.
Your travel route could be like that. Its 3.7 million inhabitants make it the european union's most populous city, according to population within city limits. Whereas, if saving money is more important, then a train is the best option with prices starting as low as $33 (€28).