Berlin Tegel Airport eminent aerospace engineers, which included German rocket pioneer Wernher von Braun. In 1937, the rocket pioneers left Tegel in favour of the secret Peenemünde army research centre. During World War II, the area served once again as a military training area, mostly for Flak troops. It was destroyed in Allied air raids. Plans for converting the area into allotment gardens were shelved due to the Berlin Blockade, which began on 24 June 1948. In the ensuing US-led Berlin Airlift, it quickly turned out that Berlin's existing main airport at Tempelhof was not big enough to accommodate all relief aircraft. As
Airport city other food services; specialty retail and factory outlet centres; cultural and entertainment attractions; hotels; banks and currency exchanges; business offices and complexes; convention and exhibition centres; leisure, recreation and fitness venues; logistics and distribution; perishables and cold storage; and free trade zones and customs-free zones. Airport cities may be found in varying stages of development surrounding major airports worldwide, particularly in Europe, where older airports are being redeveloped or expanded on large tracts of unused airport land. Many new airports in Asia are being planned as airport cities or aerotropolises. North America, South America, and Africa all boast airport city