Tucked away on the Stanford campus, Cantor Arts Center is sometimes overlooked on the local museum circuit. The third largest collection of Rodin works anchors the permanent collection. And it's all free... always!
Andy Goldsworthy's 'Stone River' work and the Papua New Guinea sculpture garden are worth a peek as well. For more campus artwork, check out the art buildings to the left (south) of the main quad approaching from Palm. On the opposite side of campus, "Makin Hay" competes aggressively in the agrarian art category :)
Address: Museum Way and Lomita Dr, Stanford, CA
Website: http://museum.stanford.edu
Wikipedia: http://en.wikipedia.org/wiki/Iris_&_B._Gerald_Cantor_Center_for_Visual_Arts