What is Behind the Window?

If you visit One Kearny in San Francisco you can ride the elevator to the 11th floor M-F until 5 PM  and enjoy a rooftop terrace that is open to the public. I just love this roof but I wonder what is behind the shade in the window. I heard a rumor there was a gym but I would prefer to think there is an attic full of relics from the past, and maybe a strange person or two.;-) -- Vivian Aldridge