Seeing a subway exit, I decided to take a stop and experience the German subway. The automatic ticket purchase machine bought two tickets, and one stop was the Frankfurt main train station. There is no need to check tickets for subway entry and exit, all consciously. There are 23 platforms at the train station, which is also a ticket machine selling tickets. No one checks the ticket and gets on the bus directly. The train station is spectacular, but there is no wide front square.