It is difficult to appreciate without seeing it in person, but considering its absolutely massive scale and that everything about it is just humongous, it blends in the landscape much better than it should. Sure, it is visible, but not overpowering. Norman Foster explained how he tried to blend it with the horizon and the sky and I think he did a fairly good job. The straight lines are unobtrusive. They are there, but they do not command attention.
It's remarkable to think of a 100 story skyscraper towering over a town of 20,000 people. Yet that's what it is!
I agree that's surprisingly graceful and elegant and doesn't detract from the environment, which is quite an achievement. And audacious in the extreme.