Open Studios

http://www.artspan.org/

Castro Street Fair

http://www.castrostreetfair.org/

Hardly Strictly Bluegrass in Golden Gate Park

http://www.strictlybluegrass.com

Oktoberfest by the Bay

http://www.oktoberfestbythebay.com/

International Vintage Poster Fair

http://www.posterfair.com/cgi-local/content.cgi

Critical Mass Bike Ride (begins at east end of Market St on the last Friday of the month at about 6pm)

http://critical-mass.info/