Airfest

Head to Crissy Field for House of Air's first annual Airfest, which includes live music and graffiti art demos, a for-real Parkour course, a super-weirdly intriguing silent disco, tons of food/drink/gear vendors, and even trampoline demos by guys who are good at action sports like local boy-turned-gold-medalist Jonny Moseley, who actually went to high school at super-tony Branson in Marin, so keep that in mind if you ever find yourself battle-rapping him in a movie with Mekhi Phifer.