San Francisco Trip Ideas (Mostly) Free Things to Do

Fort Point National Historic Site is open FREE 3 days a week 10am to 5pm (Check their website to confirm it's still open/free.) From its vantage point overlooking the spectacular Golden Gate, Fort Point protected San Francisco harbor from Confederate & foreign attack during & after the U.S. Civil War. Its beautifully arched casemates display the art of the master brick mason from the Civil War period.
Golden Gate Bridge And now through September 2011 (not free, but affordable) Food Truck Crush at the Larkspur Ferry Terminal.
San Francisco Botanical Garden See admission rates here

Exploratorium Check to see if their Free Day is still the First wednesday of each month.
Museo Italo Americano
Legion of Honor Check their website to confirm that their Free Days is still the first Tuesday of the month, and if special exhibition fees still apply.

MommyRecommends.com