It's never been part of the Doors Open programme, has it?
Buildings like that can be misleading though - my other half toured me around the Psychology building ("bunker") at UW, which I simply adore, but aside from the incredible hexagonal atrium, the inside is rather unremarkable.
I worry I have this impression that the inside is just as nice as the outside but it'll be all just exposed painted brick walls and drop ceilings. Nothing would thrill me more though than to be proven wrong by the existence of indirect valance lighting, bas relief concrete and built-in benches with giant vinyl orange-and-brown cushions 
Buildings like that can be misleading though - my other half toured me around the Psychology building ("bunker") at UW, which I simply adore, but aside from the incredible hexagonal atrium, the inside is rather unremarkable.
I worry I have this impression that the inside is just as nice as the outside but it'll be all just exposed painted brick walls and drop ceilings. Nothing would thrill me more though than to be proven wrong by the existence of indirect valance lighting, bas relief concrete and built-in benches with giant vinyl orange-and-brown cushions