What is circled in this picture? It is it just a bright spot on the model?
Also honte you bring up a good point. In the model the columns are a bit smaller then those on lower wacker, while in reality, they are quite a bit bigger. Is that limestone cladding on the model? I am assuming that those trees on the front aren't accessible from within. On the model, are the parking garage vents, except for the center portion, faced with glass?