I work for a museum (somewhat) and we recently joined the google art project. In the coming months we'll be uploading our entire art collection. Should be great.
I've established another partnership with google for a different project called 'google indoor maps'. As you can guess, this is google maps for indoor (lol)
However they are planning to add virtual layers, so you can nagivate with your smartphone and tablet in 3D. For us this could be of interest to create some sort of visitor's trail along the different art objects and possibly give some kind of interpretation.