The SF Moma always has a dynamic schedule of thought-provoking exhibitions on view, including special exhibitions and changing presentaitons from the collection of more than 27,000 artworks, photographs, and design objects. Audio guides, docet tours, video screenings, interactive kiosks, and public programs offer opportunities to learn about modern art. 

Check their website for exhibitions: http://www.sfmoma.org/

Gallery is open daily (except Wednesdays) from 11:00am-5:45pm, and open late Thursdays until 8:45pm.