Templehof Airport is an interesting place for its history, or rather its place in history. This has two main facets - firstly its pre-and-during World War 2 history, and secondly its post-World War 2 history.
Pre-and-during World War 2 - it was Berlin's main airport, but when the Nazi party came to power in Germany in the 1930's they embarked upon building a gigantic airport building, the world's largest and one of the world's largest buildings in general. This literally monumental semi-circular building would not only be the main gateway into Berlin, Germany and the Nazi Empire for air travellers but unlike many airports it would keep embarking air passengers dry during inclement with a large roof canopy in an era before air bridges were invented, and the outer wings of this massive building would be aircraft hangers where the planes could be stored when not about to be used. It was almost, but never quite finished - the shell of the building was completed but World War 2 saw the internal completion delayed. During the war, those aircraft hangers were used as a place to assemble fighter aircraft as well as an ammunition store - though the building itself was never targeted by air raids during the many bombings of Berlin, which ultimately destroyed about 80% of the city. Why? there's no definitive answer, but being so large it was easily identifiable from the air and in an age before GPS and Radar it acted as a landmark for pilots to get their bearings where they were and where they needed to bomb. This is the most likely reason why Templehof and the Luftwaffe (Air Force) Headquarters survived Berlin's aerial deluge of bombs - big identifiable buildings and both happen to be about the biggest remaining examples of Nazitechture left in Germany also.