By 1930 it was Europe's largest airport by passenger volume, serving as the hub for Deutsche Luft Hansa with a route network spanning 71 cities. Its monumental 1927 terminal building would later become a symbol of Nazi architectural ambition, yet Tempelhof earned its redemption during the 1948–1949 Berlin Airlift, when Allied aircraft landed around the clock to sustain a blockaded city. Paris-Le Bourget, meanwhile, hosted the first Paris Air Show at that site in 1953 (the inaugural show dates to 1909) and remains the historic site of Lindbergh's 1927 arrival. These three fields—Croydon, Tempelhof, and Le Bourget—were the Grand Central Stations of the sky, the places where the twentieth century learned to board an airplane and believe the world had grown small.