One interesting thing about the corridors was that they were for the use of the 4 main WW2 Allied Powers only. Thus, in 1982, I flew the FRG Chancellor as well as Mrs T on a visit to Berlin. My abiding memory of the trip was the BFBS Radio Reporter thrusting a mike into the face of a 5 year old female pupil at the Gatow Primary School and asking "Do you know who Mrs Thatcher is?". Young lady gave the reporter a look of total disdain and said :-
"Of course I do - SHE'S THE STATION COMMANDER OF ENGLAND!!"