The Whitney, however, although modern, is a great place to see art. Breuer did a brilliant job on that building. Steel and glass boxes never did much for me (other than the Seagram's building).
I'm pretty easy to please when it comes to museums & I'm seriously prejudiced but I have a massive soft spot for Louis Kahn's art museums (Yale Center for British Art, but especially the Kimbell in FW TX).
For more commentary on the new Cullman Ed. Bldg, here's James Gardner's take in the New York Sun yesterday.