Berlin metropolitan is considered to be the 1st metropolitan in Germany and one of the 1st metropolitans of continental Europe.
One of the peculiarities of Berlin metropolitan is hidden in the absence of turnstiles (tourniquets). Ticket boxes as well as special punchers for them are located in each station.
Metro in Germany is noted with letter M to be reachable for everyone. Letter U stands for Untergrundbahn (underground way) or to put it short U-Bahn.
With the help of my pictures I have tried to represent the everyday life of Berlin metro.