In 1922, the railway system, that connected Berlin to its neighboring cities and villages was electrified and transformed into the S-Bahn, and a year later Tempelhof airport was opened.
I 1922 blev jernbanenettet, som bandt Berlin og de omkringliggende forstæder sammen, elektrificeret og ombygget til S-Bahn, og året efter åbnede Tempelhof lufthavn.