Berlin Tegel Airport One-Eleven that was inbound from Tenerife. Following Pan Am's and British Airways's move from Tempelhof to Tegel on 1 September 1975, the latter replaced Tempelhof as the main airport of West Berlin. Following Germany's reunification on 3 October 1990, all access restrictions to the former West Berlin airports were lifted. Lufthansa resumed flights to Berlin on 28 October 1990, initially operating twelve daily pairs of flights on a limited number of routes, including Tegel–Cologne, Tegel–Frankfurt and Tegel–London Gatwick. To facilitate the German flag carrier's resumption of services from/to Berlin, it purchased Pan Am's Internal German Services (IGS) division for US$150
Airport city logically combined elements that reinforce each other. Services and facilities are designed to guide travelers easily through the airport process. Access is key for passengers, cargo, businesses, and residents, many of whom work in the airport city. "Time" has named it as one of "10 ideas that will change the world". The chapter "The Way Forward" from "Global Airport Cities" describes the basic airport city drivers, which have evolved with different spatial forms predicated on available land and ground transportation infrastructure: The most common airside and landside airport city commercial activities include: duty-free shops and airline lounges; restaurants, catering, and