This is taking me a really long time, particularly dealing with some of these shapes, so this is a very preliminary draft. I'll post more pics as I work but I figured I'd put up what I have so far. It gives an idea of where I'm going. I haven't thought about lighting yet so I've just put in a couple of quick lights so you can see the interior spaces.
Overall form. There will be a whole bunch more beams in different sizes nesting all the interior geometry, these are just the 'elevator' shafts.
View from inside an elevator shaft.
Inside meeting space, more holes forthcoming.
Obama space before lighting:
Inside Obama with some quick lights thrown in: