The Hyatt Regency in Atlanta, where PyCon is, has a huge atrium, and all the hotel rooms are on the galleries along the edges. It's all concrete and therefore looks a lot like 70s (or so) futuristic architecture (the transparent, but lit up elevators do an additional job at enforcing this impression). Besides that, it also reminds a lot of Star Wars' Galactic Senate, with hundreds of senators each in their own floating "VIP booth".