1. The Great San Francisco Pillow Fight
San Francisco’s best Valentine’s Day tradition is proof that love hurts. The annual pillow fight in Justin Herman Plaza draws hundreds of pillow-wielding players for a raucous free-for-all that can go on for hours. The feathers fly at the stroke of six; bring your own pillow, preferably a synthetic one to minimize clean-up after the event.
Justin Herman Plaza, 5:50–9pm; Free.