The Carpenter Center for the Visual Arts (left) is Le Corbusier's only building on this continent and Harvard's most exciting one. You can walk under and through the VAC three different ways without even getting inside. The only entrance is hidden from the street, under an overhang, and near the building's geometric center. Its combination of curved and planar surface screate a kind of dynamic visual movement few buildings have. Its axis is on a diagonal from Quincy St.; but the exterior has no "sides."