Very nice. I wish they had a way to make it go full screen though. Unless I missed it. Seems odd that with widescreen monitors they took up so much real estate above and below the view area, it really cuts down the size displayed. Why not put that on the side? Or move-able for portrait/landscape art?
F11 helps remove some of your browser borders.
Art Institute in Chicago has some good online resources, but not this hi-rez zoom in capability -
About This Artwork | The Art Institute of Chicago
Maybe they will sign up with google?