The charming couple you see above, apparently engaged in struggle with an expensive-looking vacuum cleaner, is the late artist Larry Sultan’s parents. The photograph is from this Bay Area luminary’s hugely acclaimed Pictures from Home series, which earned Sultan the title “king of color photography” and is held largely in major museums like SFMOMA. This Wednesday, at a benefit auction marking the Headlands Center for the Arts’ 30th birthday, Bay Area collectors will have a once-in-a-lifetime chance to acquire it.

Working in the Financial district, you could pass the sleek, tinted glass exterior of Millennium Tower (301 Mission Street) daily without noticing the rare contents of its street level atrium. Those with the curiosity to enter will find what was set aside for them: A cool place for workday respite, containing three world class sculptural and installation works of contemporary art, two by local artists.

Before next week’s fairs throw the SF gallery scene into a veritable art blizzard, take this weekend to catch some incredible exhibitions on the usual, somewhat more relaxed, terms. From a unique video-only exhibition to a feast of tenacious conceptual art, there will be more than enough to keep you busy.

The city’s museums now have their major exhibitions out and swinging (you’ve seen Foto Mexico and Gaultier; the ads plastered over town are maybe coaxing a return visit) and the gallery circuit is on the cusp of exploding into a big spring season. Our suggestion: take this weekend to explore some of the Bay’s slightly smaller, considerably less hyped, but no doubt equally fascinating museum shows. Here are three picks.