This is the season to explore the shadowy corners, howling winds, and creaking doors of Fort Point National Historic Site in San Francisco. This family-friendly afternoon is scare-free, but full of global Halloween traditions: 19th century historic re-enactors wandering the halls; Create Day of the Dead sugar skulls; Face painting; S'mores; Food trucks; candlelight tours; and 4:30 pm kids' costume parade.