Given which, the girl has done good. This is not the explosive architecture, all fragments and splinters flying away from its creative Big Bang, that we associate with the early years of Hadid and her deep-space paintings. It is, from the outside, positively restrained. Even from street level, right on the corner where it has most impact, it seems to be holding something back. I puzzled about this for a while. Then I realized what the problem was. This is intellectual European architecture in an American city. It has subtleties. And Cincinnati doesn't really do subtlety. It is right across the street from a perfectly adequate concert hall and theatre complex by Cesar Pelli, the man who gave us the Canary Wharf tower in London. Enough said.