Unfortunately the images cannot be downloaded from Google Art Project (original name).

It's irritating having to jump over complicated hurdles to get a seamless hi-res image capture from Google Arts. It requires some messing about, but I previously managed to grab about 100 high res images, but it took ages and was not easy. They printed out nicely in the end though, so was worth it.

A simple download link as seen on artic.edu would be appreciated but sadly I don't see Google providing this because they want people to remain on Google, logged in, while they view art.