very much enjoyed  the invitation of Architekturpreis Berlin e. V. and Tempelhof Projekt GmbH to discuss the transformation of the 300,000 m² megastructure Tempelhof at the Tempelhof Tower. It is a building, a neighborhood and a city at the same time. Neither the use of a world airport with a visitors’ grandstand for air shows, as planned by its builders, nor the associated urban development references were implemented. Instead, the structure has undergone a myriad of uses over the past 80 years; many of which have left very unique layers of history. At this fascinating place and on the basis of this airport Tegel example, we discussed in the format “KutscherHaus meets THF” which processes and fundamental changes in the form, structure and nature of a city-in-the-city are suitable for raising the potential hidden in the existing buildings and for entering into symbiotic relationships with the surrounding urban spaces.