Buildings: What are the most beautiful office complexes in the world?

Have you seen Apple's new coporate offices yet?    That is an excellent before/after study, when you look back at the Compaq HQ campus that was there before.  Most corporate campuses are a group of buildings with open space between, but that space is rarely used effectively.    The new Apple HQ turns that issue inside out, but having one space and one one building, rather than several buildings with non-cohesive space. Many campuses have attempted to design exterior space, but is usually a failed attempt.  People just do always do what you expect them to do.   Apple's plans is to plant a lot of trees in a non-regulated or designed way, and let the people enjoy them however they want.   It will be a significant departure from the normal way of thinking about spacial design.   But then again, its Apple.  

My favorite Office building is Centraal Beheer By Herman Hertzberger