In Fantastic Beasts and Where to Find Them when Newt and Tina are on the run and joined by Jacob and Queenie, there is a chase in an area of MACUSA which is presumably low in the building and full of pillars.
What is the purpose of this space? It seems to contain nothing but empty space with many lights and many pillars. It doesn't seem to be for storage as it is empty. It's a very large space.
What is it?