The now closed Tempelhof Airport, once used for the Berlin Airlift. More info can be found here on Wiki. "On 20 June 1948 Soviet authorities, claiming technical difficulties, halted all traffic by land and by water into or out of the western-controlled section of Berlin. The only remaining access routes into the city were three 25 mile-wide air corridors across the Soviet-occupied zone of Germany.[7] Faced with the choice of abandoning the city or attempting to supply its inhabitants with the necessities of life by air, the Western Powers chose the latter course, and for the next eleven months sustained the city's two-and-a-half million residents in one of the greatest feats in aviation history."