On November 8, 2020, the last flight took off from Berlin-Tegel Airport. It has been in operation for 46 years and managed the change from being the door to West-Berlin to becoming the capital airport of unified Germany. Originally designed for 2.5 million annual passengers, the airport ultimately handled 24 million passengers per annum. The airport has been listed as a historic monument since 2019. Following its closure, its buildings will continue to be used as part of the future Urban Tech Republic. The overall layout of this drive-in airport was pre-structured in such a way that all future developments remain part of a whole, just as all construction elements, ceilings, floors, staircases, and fixtures were developed based on the same geometric logic. The geometric organizing principle of the triangular grid used in the layout is reflected in the elevations. The texture of the concrete used for the shell construction has been left exposed outside and inside. Whereas all primary functions are placed in the central area, the ring with the departure gates is primarily used for the decentralized, direct handling of passengers and airplanes. Departure and arrival are on the same level. In addition to the design of the airport, gmp was also asked to produce detail designs of the operating buildings, the roads, bridges, and runways, the landscape design, the information system, and the design of almost all interior fixtures and fittings.