2012 SF Carnaval King Roberto and Queen Ashlee

PHOTO BY DAVE GOLDEN

September 30

Petaluma's Fall Antique Faire, Fourth Street and Kentucky from B Street to Washington, Petaluma. (707) 762-9348, www.petalumadowntown.com. 8am-4pm, free. Watch as downtown Petaluma transforms in to an antique marketplace of estate jewelry, furniture, art, and collectables from over 180 dealers.

October 4-14

Mill Valley Film Festival, California Film Institute, 1001 Lootens, San Rafael. (415) 383-5256, www.mvff.com. $13.50 per screening. The 11-day festival presents international features, documentaries, shorts, and children's films, as well as workshops and seminars dedicated to the art of film-making.

October 5-7

Hardly Strictly Bluegrass, Golden Gate Park, John F. Kennedy at Marx Meadow, SF. www.strictlybluegrass.com. Free. Warren Hellman has left us in February, but the bluegrass music festival he gifted to San Francisco goes on in memory of its esteemed founder.

October 6

Steampunk Oktoberfest Ball, Masonic Lodge of San Mateo, 100 North Ellsworth, San Mateo. (650) 348-9725, www.peers.org/steampunk.html. 8pm, $15 adv.; $20 at door. Steampunk is a combination of modern technology and Victorian fashion tastes. Think steam-powered airships and breathable corsets. Nineteenth century waltzes, mazurkas, and polkas set the soundtrack to this year's revelry of costumes, dancing, and anachronistic inventions.

October 7

Castro Street Fair, Castro at Market, SF. (415) 841-1824, www.castrostreetfair.org. 11am-6pm, donations collected at entry. Founded by Harvey Milk in 1974, this community street festival joins hundreds of craft vendors, various stages of live entertainment, and an impressive array of outfits and wigs as a celebration of the Castro's ever-growing diversity.

October 13-14

Treasure Island Music Festival, Treasure Island, SF. www.treasureislandfestival.com. $69.50 for single day tickets; $125 for regular 2-day tickets. For those who are normally discouraged by large music festivals because of the usual mobs of people, this is the event for you. The festival always sports a great bill of performers, all of which you can enjoy while having a relaxing a picnic on the grass, watching the sunset fall over the Golden Gate Bridge. The lineup will be revealed later this summer.

October 15

Noe Valley Harvest Festival, 24th St. between Church and Sanchez, SF. (415) 519-0093, www.noevalleyharvestfestival.com. 10am-5pm, free. Fall into autumn's welcoming leaves — there will be circus performers, dog costume contests, jack-o-lantern decorating booths, and a pumpkin patch to make you forget all about your fleeting summer crush.

October 26-28

International Vintage Poster Fair, Fort Mason Center, SF. (800) 856-8069, www.posterfair.com. $15. This is the only show in the world that offers over 15,000 original vintage posters. Throw out your duplicate copy, and run here now.