Museums on a discount

Your cultural education shouldn't burn a hole in our pocket. Here are a few money-saving ways:

• Check the museum website for free days, or you can just check out sites that list free museum days. Those days tend to be more crowded than usual, so you should go as early as you can, when the rest of the attendees are having breakfast and stuff. 
• If they don't have free days, check for free evenings. The SF Museum of Modern Art, for example, lets people in for free every Friday evenings.
• Look for two-fers. Some museums have agreements with each other. Two western fine arts museums, the Legion of  Honor and the De Young, are sister institutions. A ticket for one is good for entry to the other.
• Check to see if the ticket allows for multiple entries. Both the Legion of Honor and the De Young let you back in a couple of days after you enter the museum. If you went on a Saturday, you can come back on Sunday and Tuesday (because Monday is not open to the general public).
• If you have a AAA card, you can get discounts for some museums. For example, you can get the admissions for a second ticket at half price. 
• If they have a hot, special exhibit, get your tickets from Costco. Costco had one of the best deals for the King Tut exhibit in the De Young, for example. It came with the audio tour and didn't slap you with a service charge. Just go to the warehouse, buy the voucher, redeem it online, and print the tix. 
• Get more discount tips about other events from Bay Area on the Cheap.