This room was one of the most impressive ones to me. It used to be the ceiling of the 14m high entrance hall, but then they built a new ceiling that was "only" 7m high and turned this into a supply room. Whenever repairs were and are needed, wall panels can just be taken off these walls and used on other ones. The ceiling used to be white, but turned black in a fire in WWII. Also, scenes of Mockingjay were filmed here.
I did a tour of the old airport today, so I apologize in advance for spamming my feed with pictures of that tour for the next couple of days. I've lived right by this airport for twenty years, but this was my first tour of it. I love the building even more now.