The fault that caused the 1989 Loma Prieta quake here in the Bay Area is about a quarter-mile from where I live here. Call it weird if you want, but I wouldn't want to be any closer.

Beyond that, there's the Winchester House in San Jose. And going out into the farmland at night, ugh. *shudder* No light whatsoever, except for whatever might be above you. That's really unsettling, too.