In the catalog for "William Kentridge: Five Themes," a major survey now showing at the San Francisco Museum of Modern Art, the artist writes: "[B]efore the work can begin (the visible finished work of the drawing, film or sculpture), a…

"Spire," a major new work by Andy Goldsworthy in the Presidio of San Francisco, rises like a steeple out of the earth. Overlooking the bay and Alcatraz Island in the distance, "Spire" grabs the attention of joggers, bikers and sightseers…